久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

English 中文網 漫畫網 愛新聞iNews 翻譯論壇
中國網站品牌欄目(頻道)
當前位置: Language Tips > Special Speed News VOA慢速

'The map of life'; ancient dogs; Golden Gate at 75

[ 2012-06-29 17:45]     字號 [] [] []  
免費訂閱30天China Daily雙語新聞手機報:移動用戶編輯短信CD至106580009009

CHRISTOPHER CRUISE: This is SCIENCE IN THE NEWS, in VOA Special English. I'm Christopher Cruise.

BARBARA KLEIN: And I'm Barbara Klein. Today, we tell about a project called "The Map of Life." We also tell about a study of modern dogs and their ancestors. And we tell about a major anniversary for the world famous Golden Gate Bridge.

(MUSIC)

CHRISTOPHER CRUISE: Suppose you would like to catch a muskellunge. Where in the world would you go to find that fish species? Where can you take a picture of the rare Giant Petrel bird? Or where would you find fields of calaloo?

If you have an Internet connection, you may get the answers to such questions with a new map. It shows the natural habitat, or living spaces, of about 25,000 species. They include all land animals with backbones, animals that live on land and water, and most of the fresh water fish in North America.

'The map of life'; ancient dogs; Golden Gate at 75

You can test a version of this new technology tool at Mappinglife.org. Information is being continually added. And, perhaps best of all, the information is free. You do not pay to use the service.

BARBARA KLEIN: The new map was described recently in the journal Trends in Ecology and Environment. Its creators say the map will provide the first interactive, two-way path to information about biodiversity – the many living creatures found on Earth. Users will be able over time to add or change information about species.

Walter Jetz is a conservation biologist at Yale University in Connecticut. He was lead writer of the report. He says information used in the map comes from several sources. They include workers with the United States National Park Service, field guides, and observations from individual scientists. The Global Biodiversity Information Facility in Denmark also supplied information. The center made available more than 300 million records of plant and animal locations.

The information is in different colors and shapes so it is easy to recognize what areas you want to research.

Mr. Jetz says, "The map is the where and the when of a species. The hope is for this to include hundreds of thousands of animals and plants and show how much or how little we know of their whereabouts."

CHRISTOPHER CRUISE: Robert Guralnick of the University of Colorado is another member of the mapping team. He says the online map will help governments and scientists decide how to use land and plan conservation efforts. And, it may also provide information about climate change and about diseases passed between animals and people.

The researchers say the success of the project will depend on the help of other scientists, environmental groups and people with knowledge of the subject.

Mr. Guralnick says the next step is to provide ways for anyone, anywhere to find animal and plant distributions with mobile or wireless technology. He says it is even possible that people could learn their chances of making contact with a wildlife species. He adds that the "Map of Life" project is following the examples of other banks of knowledge.

(MUSIC)

BARBARA KLEIN: Modern dogs may look like the animals painted on the walls of ancient Egyptian buildings. But a new report says many centuries of cross-breeding make it hard to learn about the ancestry of man's best friend. The report appears in the scientific journal Proceedings of the National Academy of Sciences USA.

Scientists say it is wrong to call some modern dog breeds "ancient." That includes what are said to be ancient breeds, like the Shar-Pei, the Akita and the Afghan hound. The new report says those animals are not closer to the first domesticated dogs than any other modern breed. Earlier research suggested that their genetic structure was similar to ancient breeds.

CHRISTOPHER CRUISE: Dogs were the first animals to become domesticated. Experts say dogs stopped being wild about 15,000 years ago. Domestication involved changes in the make-up, or structure, of genes. Over time, dogs became work animals. For example, some breeds were very good at protecting and guiding farm animals. But others were not house-trained and were not kept as pets until about 2,000 years ago.

The international team of scientific researchers based their results on a study of ancient and modern dogs. They worked with 1,375 animals. The animals represented 35 dog breeds.

BARBARA KLEIN: The researchers examined the genetic structure of 121 breeds. Then they compared that information with a worldwide archeological study of the remains of the earliest dogs. They also studied the genes of 19 wolves. Earlier research suggested that modern dogs may have developed first from the grey wolf.

The researchers say human movement is another reason for the genetic difference between ancient and modern dog breeds. Historic events like the two world wars also affected the dog population.

CHRISTOPHER CRUISE: Greger Larson of Durham University in England was lead writer of the report. Professor Larson says dogs have followed humans everywhere. And he notes, "We really love our dogs, and they have accompanied us across every continent."

The researchers say some of the findings about what are considered "ancient" breeds seem opposite of what you might think. For example, none of the oldest breeds came from areas where the oldest archeological remains have been found.

Keith Dobney from the University of Aberdeen in Scotland also worked on the research team. He said, "We still have some way to go to understand how, where and when the dog became man's best friend."

(MUSIC)

BARBARA KLEIN: Finally, the Golden Gate Bridge is celebrating its 75th anniversary. The bridge opened to vehicle traffic on May 28th, 1937. Since then, more than two billion vehicles have crossed the world famous structure between San Francisco and Marin County, California. As many as 112,000 cars make the trip each day.

The Golden Gate Bridge had the longest suspension span in the world, at the time it was built. The suspended roadway stretches 1,280 meters between the bridge's two tall towers. Today it still rates among the top ten longest bridge spans in existence.

CHRISTOPHER CRUISE: Mary Currie works for the Golden Gate Bridge, Highway and Transportation District. She says the bridge is one of the most extraordinary engineering projects of all time.

MARY CURRIE: "The Golden Gate Bridge is an engineering marvel certainly, and it gets award after award after award for what it means in civil engineering and structural engineering. It's also a place where things happen first. For example, we were the first suspension bridge to have to change the roadway deck."

The Golden Gate Bridge is named after the Golden Gate Strait. That narrow passage of water connects the San Francisco Bay to the Pacific Ocean. Joseph Strauss was the chief engineer of the Golden Gate Bridge project. Work began in 1933. The project took four years to complete.

BARBARA KLEIN: The bridge is 2,788 meters long from one end to the other. It is 27 meters wide. Two large cables pass over the top of the bridge's towers. These structures stand 227 meters above water and 152 meters above the road. Each cable holds more than 27,500 strands of wire.

Two hundred fifty pairs of vertical suspender ropes connect the support cables to the suspension bridge. This is part of what enables the bridge to move up and down by nearly five meters.

CHRISTOPHER CRUISE: The Golden Gate Bridge weighed 811,500,000 kilograms when it was completed in 1937. The San Francisco Chronicle newspaper called the finished project, "a 35 million dollar steel harp!"

Architect Irving Morrow gets credit for the bridge's bright orange color. The Navy wanted the bridge painted in yellow and black. The Air Force had suggested red and white.

MARY CURRIE: "But we were fortunate that Irving Morrow knew that that color would blend with the environment, it would contrast with the ocean and the air above, and it would also allow the art deco styling to really stand out."

(MUSIC)

BARBARA KLEIN: This SCIENCE IN THE NEWS was written by Jerilyn Watson and June Simms, who was also the producer. I'm Barbara Klein.

CHRISTOPHER CRUISE: And I'm Christopher Cruise. You can find transcripts, MP3s and podcasts of our programs at voaspecialenglish.com. And you can find us on Twitter and YouTube at VOA Learning English. Join us again next week for more news about science in Special English on the Voice of America.

muskellunge: 大梭魚

Related stories:

Golden Gate Bridge still shines after 75 years

中國冠毛犬獲評世界最丑狗 因天生丑勝出

訓練狗狗不容易

The search for DNA from a creature that may not exist

(來源:VOA 編輯:旭燕)

 
中國日報網英語點津版權說明:凡注明來源為“中國日報網英語點津:XXX(署名)”的原創作品,除與中國日報網簽署英語點津內容授權協議的網站外,其他任何網站或單位未經允許不得非法盜鏈、轉載和使用,違者必究。如需使用,請與010-84883631聯系;凡本網注明“來源:XXX(非英語點津)”的作品,均轉載自其它媒體,目的在于傳播更多信息,其他媒體如需轉載,請與稿件來源方聯系,如產生任何問題與本網無關;本網所發布的歌曲、電影片段,版權歸原作者所有,僅供學習與研究,如果侵權,請提供版權證明,以便盡快刪除。
 

關注和訂閱

人氣排行

翻譯服務

中國日報網翻譯工作室

我們提供:媒體、文化、財經法律等專業領域的中英互譯服務
電話:010-84883468
郵件:translate@chinadaily.com.cn
 
 
久久久无码人妻精品无码_6080YYY午夜理论片中无码_性无码专区_无码人妻品一区二区三区精99

    国产日韩一级二级三级| 国产女人18水真多18精品一级做 | 中文字幕一区二区在线观看| av在线一区二区| 亚洲午夜一二三区视频| 日韩欧美在线123| 国产精品夜夜嗨| 综合分类小说区另类春色亚洲小说欧美 | 97国产一区二区| 亚洲综合一区二区精品导航| 欧美高清dvd| 久久国产婷婷国产香蕉| 欧美激情综合在线| 91行情网站电视在线观看高清版| 日韩高清不卡在线| 国产午夜亚洲精品午夜鲁丝片| aaa欧美大片| 日韩1区2区日韩1区2区| 国产免费成人在线视频| 在线观看视频91| 美女视频网站黄色亚洲| 欧美经典一区二区| 欧美片网站yy| 成人一区在线观看| 亚洲国产美女搞黄色| 欧美精品一区二区高清在线观看| 波多野结衣亚洲| 日本一不卡视频| 国产精品国产精品国产专区不蜜| 在线不卡免费av| 成人午夜短视频| 日本三级韩国三级欧美三级| 中文欧美字幕免费| 欧美二区三区的天堂| 成人一二三区视频| 天涯成人国产亚洲精品一区av| 国产免费成人在线视频| 538在线一区二区精品国产| 国产成人精品一区二区三区四区 | 亚洲高清免费视频| 国产午夜精品一区二区三区四区| 欧美日韩在线综合| 成人av午夜影院| 免费三级欧美电影| 一区二区三区在线观看视频| 久久久www成人免费毛片麻豆| 欧美午夜精品久久久久久超碰| 国产剧情一区在线| 日韩精品电影一区亚洲| 亚洲欧美日韩精品久久久久| 久久蜜桃一区二区| 欧美福利一区二区| 色天天综合色天天久久| 国产精品一区二区三区乱码 | 国产一区二区三区免费观看| 亚洲国产精品久久人人爱| 国产精品女人毛片| 精品嫩草影院久久| 欧美疯狂做受xxxx富婆| 91免费看片在线观看| 国产成人在线视频网站| 久久精品国产在热久久| 亚洲一区欧美一区| 中文字幕一区三区| 国产欧美日韩三级| 日韩精品一区国产麻豆| 欧美精品第1页| 欧美在线不卡一区| 91在线小视频| 成人免费高清在线| 国产精品自拍一区| 久久精品国产免费| 五月天久久比比资源色| 一区二区三区免费观看| 中文字幕欧美一| 国产精品入口麻豆原神| 26uuu精品一区二区在线观看| 欧美一区二区三区精品| 欧美视频中文一区二区三区在线观看| 92精品国产成人观看免费| 成人午夜看片网址| 国产成人亚洲精品青草天美| 国产美女久久久久| 国产制服丝袜一区| 国产一区二区调教| 国内久久精品视频| 国产又黄又大久久| 精品中文字幕一区二区| 蜜桃一区二区三区在线| 蜜臀av性久久久久蜜臀aⅴ | 欧美亚洲精品一区| 一本高清dvd不卡在线观看| eeuss鲁片一区二区三区在线看| 国产69精品久久777的优势| 国产精品一区二区视频| 国产福利91精品| 丁香六月综合激情| 成人精品视频一区二区三区| 成人一区二区三区| 成人av在线播放网址| 99久久99久久精品国产片果冻| 成年人国产精品| 91在线精品秘密一区二区| 一本色道久久加勒比精品| 91亚洲精品一区二区乱码| 91蜜桃免费观看视频| 在线观看91精品国产入口| 欧美性xxxxxxxx| 欧美日韩dvd在线观看| 4hu四虎永久在线影院成人| 4438x成人网最大色成网站| 欧美一级在线免费| 欧美电影免费提供在线观看| 精品国产91亚洲一区二区三区婷婷| 2023国产精华国产精品| 久久精品亚洲一区二区三区浴池| 欧美激情综合在线| 亚洲男人都懂的| 亚洲成人免费电影| 日韩黄色小视频| 激情深爱一区二区| 成人国产一区二区三区精品| 94色蜜桃网一区二区三区| 欧美无人高清视频在线观看| 欧美一级久久久| 久久久久久97三级| 亚洲人午夜精品天堂一二香蕉| 亚洲综合丝袜美腿| 日韩专区在线视频| 激情成人综合网| 成人av午夜电影| 欧美私人免费视频| 欧美精品一区二区精品网| 国产精品理论在线观看| 一区二区三区免费观看| 美女网站在线免费欧美精品| 粉嫩嫩av羞羞动漫久久久| 色综合久久久久久久| 欧美一区2区视频在线观看| 久久亚洲精精品中文字幕早川悠里| 国产精品色在线| 亚洲综合自拍偷拍| 毛片av一区二区| jvid福利写真一区二区三区| 精品视频一区 二区 三区| 久久综合久久综合久久综合| 亚洲啪啪综合av一区二区三区| 天堂久久一区二区三区| 国产成人a级片| 欧美图片一区二区三区| 亚洲精品一区二区三区蜜桃下载 | 中文字幕一区三区| 日韩va欧美va亚洲va久久| 国产大陆精品国产| 欧美日韩国产综合久久| 久久中文娱乐网| 亚洲精品免费电影| 美腿丝袜亚洲色图| 91原创在线视频| 亚洲精品在线三区| 亚洲男同性恋视频| 国产一区二区三区最好精华液| 日本高清无吗v一区| 26uuu欧美日本| 亚洲福利视频一区二区| 国产成人午夜片在线观看高清观看| 欧美三级电影网| 日本一区二区视频在线观看| 水野朝阳av一区二区三区| 99精品国产91久久久久久| 91精品在线免费观看| 国产精品久久久久久久久晋中| 秋霞国产午夜精品免费视频| 91女神在线视频| 久久久久久影视| 天天影视涩香欲综合网| 成+人+亚洲+综合天堂| 日韩精品中文字幕一区| 亚洲综合激情小说| 风间由美一区二区三区在线观看 | 国产精品视频一二三| 奇米一区二区三区| 在线视频国产一区| 欧美国产精品一区二区三区| 日本免费新一区视频| 色婷婷久久综合| 国产欧美日韩麻豆91| 久久99在线观看| 欧美日韩精品一区二区天天拍小说| 中文字幕一区二区在线播放| 国产在线精品一区二区| 宅男噜噜噜66一区二区66| 日韩理论电影院| 懂色av一区二区三区免费看| 日韩精品综合一本久道在线视频| 亚洲成人资源在线| 色综合色狠狠天天综合色| 中日韩av电影| 国产一区二区成人久久免费影院| 日韩一级在线观看|