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

您現(xiàn)在的位置: > Language Tips > Audio & Video > Special Speed News  
 





 
Bringing color to life with natural dyes
[ 2007-05-21 10:16 ]

Dye can bring a little color to life. Most clothing is colored with dyes. Modern, manufactured dyes can be costly. Natural dyes from plant and animal products have been used since ancient times. So this week, we describe a natural way to dye wool.

The advice comes from information written by Jenny Dean of the Intermediate Technology Development Group in Britain. This anti-poverty group is now called Practical Action.

There are several methods to put dye onto material. The vat method, for example, can be used to dye wool with onionskins. For this example, use one hundred grams of natural wool. The wool must be clean. Leave it overnight in water and liquid soap. Then wash it with clean water that is a little warm. Gently squeeze out the extra water.

A solution called a mordant is used in the dying process. A mordant helps fix the dye to the material. Traditionally, mordants were found in nature. Wood ash is one example. But chemical mordants such as alum are popular today. Alum is sold in many stores. It is often mixed with cream of tartar, a fine powder commonly used in cooking.

Mix eight grams of alum with seven grams of cream of tartar in a small amount of hot water. Add the solution to a metal pan of cool water. Next, add the wool and place the mixture over heat. Slowly bring the liquid to eighty-two degrees Celsius. Heat the mixture for forty-five minutes. After it cools, remove the wool and wash it.

To prepare the dye solution, cover thirty grams of onionskins with water. Use only the dry, brown outer skins. Boil the liquid until the onionskins lose their color, about forty-five minutes,. Remove the skins after the dye cools.

Now it is time to dye the wool. Place the wool into the dye and heat the mixture. Bring it to a boil, then immediately reduce the heat to eighty-two degrees. Now heat the dye for about forty-five minutes or until the wool is the desired color. Keep in mind that wet wool looks darker than it is.

Once the dye cools, remove the wool and wash it. Now the wool is orange or yellow. Or at least it should be.

Internet users can get the full details at practicalaction, one word, dot org. Again, the address is practicalaction dot org. And enter the word "dye," d-y-e, in the search box.

And that's the VOA Special English Development Report, written by Jill Moss. I'm Steve Ember.


點擊進入更多VOA慢速

(來源:VOA  英語點津姍姍編輯)

 
 
相關文章 Related Stories
 
Va. Tech: 'As strong a place as it has always been' The formula for becoming a pharmacist
Choose your degree at an American college
         
 
 
 
 
 
         

 

 

 
 

48小時內(nèi)最熱門

     

本頻道最新推薦

     
  Bush backs immigration reform
  《云中漫步》(精講之三)
  Job market strong for college graduates
  Wolfowitz resigns amid conflict of interest scandal
  Britain's next PM promises different kind of gov.

論壇熱貼

     
  快快加入“凈臉兩周年特別活動”
  英語點津開博客,大家覺得怎么樣?
  立此存照(4):上海市政府網(wǎng)站
  "一夜之間出名"
  電視主持人說的"下面更多精彩”
  “關鍵時刻掉鏈子“怎么說阿






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

    亚洲天堂av一区二区三区| 日韩不卡一二三| 亚洲国产精品三区| 精品一区二区三区毛片| 日韩在线一级片| 欧美在线a视频| 女人天堂av手机在线| 天天操夜夜操很很操| 欧美性大战久久久久xxx| 欧美性视频在线播放| 看av免费毛片手机播放| 一本之道在线视频| 国产又猛又黄的视频| 国产日韩欧美精品在线观看| 极品粉嫩美女露脸啪啪| 成人免费在线小视频| 欧美另类videos| 超碰人人草人人| 欧美三级午夜理伦三级| 草草草视频在线观看| 五月天av在线播放| 哪个网站能看毛片| 91亚洲精品国产| 婷婷中文字幕在线观看| 欧美成人黑人猛交| 国产真人做爰毛片视频直播| 在线a免费观看| 日韩大片一区二区| 精品99在线视频| 国产情侣第一页| 国产高潮呻吟久久久| 视色视频在线观看| 熟妇人妻va精品中文字幕| 久久综合久久久久| 国产三级中文字幕| 午夜一区二区视频| 色悠悠久久综合网| 日韩毛片在线免费看| 亚洲国产精品无码观看久久| 日本天堂免费a| 国产成人精品免费看在线播放| 成年人三级黄色片| 15—17女人毛片| 男人添女人下面免费视频| www国产黄色| 内射国产内射夫妻免费频道| 成人免费看片'免费看| 奇米777四色影视在线看| 二级片在线观看| 色乱码一区二区三区熟女| 欧美国产日韩在线视频| www.污污视频| 亚洲日本黄色片| 日韩视频在线免费播放| 熟女视频一区二区三区| 亚洲国产精品女人| 日本久久高清视频| 神马午夜伦理影院| 国产成人艳妇aa视频在线| 成年人看的毛片| 北条麻妃在线观看| 天天爽天天爽夜夜爽| 亚洲免费看av| 色噜噜狠狠一区二区三区狼国成人| 成人日韩在线视频| 久久久久久久高清| 91精品国产毛片武则天| 欧美这里只有精品| 男人日女人逼逼| www.四虎成人| 亚洲激情在线看| 欧美一级爱爱视频| 欧美视频在线免费播放| 一本久道综合色婷婷五月| 久久久久国产精品熟女影院| 国产91色在线观看| 99亚洲国产精品| 777777av| www.日本一区| xxx中文字幕| 成年人午夜视频在线观看| 成人小视频在线看| 在线播放黄色av| 国产精品一线二线三线| 四虎永久在线精品无码视频| 91制片厂毛片| 熟女视频一区二区三区| 男人操女人逼免费视频| 日日躁夜夜躁aaaabbbb| 日本一区二区三区四区五区六区| 丰满的少妇愉情hd高清果冻传媒| 人妻内射一区二区在线视频| 日本中文字幕观看| 国产在线播放观看| www.com黄色片| www.国产亚洲| 日韩亚洲在线视频| 日本道在线视频| 久久精品免费网站| 青青草视频国产| 午夜免费福利在线| 久久综合久久网| 国产色视频在线播放| 国产精品无码免费专区午夜| 自拍偷拍 国产| 国产91视频一区| 一本色道久久亚洲综合精品蜜桃 | 国产婷婷一区二区三区| 精品日韩久久久| 黄色一级片在线看| 亚洲精品在线网址| 茄子视频成人免费观看| 99久久久无码国产精品性色戒| 97视频在线免费播放| 好吊色这里只有精品| av免费网站观看| 日本免费a视频| 国产色视频在线播放| 欧美亚洲国产成人| 日本一道在线观看| 性猛交ⅹ×××乱大交| 国产免费黄色av| 日韩精品手机在线观看| 久久婷五月综合| 久久精品99国产| 婷婷五月综合缴情在线视频| 手机精品视频在线| 国产区二区三区| 色综合久久久久无码专区| 国产卡一卡二在线| 中文字幕66页| 日本在线视频www| 国产日韩av网站| 欧美另类videos| 午夜激情视频网| 极品粉嫩美女露脸啪啪| 成人性生生活性生交12| 欧美黑人经典片免费观看| www国产免费| www.亚洲一区二区| 一区二区三区日韩视频| 亚洲小视频网站| 少妇性l交大片| 欧美网站免费观看| 欧美黑人经典片免费观看 | 免费国产成人av| 黄色片网址在线观看| 国产一区二区三区乱码| 懂色av粉嫩av蜜臀av| www.国产视频.com| 手机视频在线观看| 日本激情视频在线播放| 热久久精品免费视频| 久久精品网站视频| 999香蕉视频| 噼里啪啦国语在线观看免费版高清版| 日本在线xxx| 免费欧美一级视频| 精品一卡二卡三卡| 一区二区三区国产免费| 四季av一区二区| 国产激情在线观看视频| www日韩在线观看| 国产精品视频黄色| 男女视频在线看| 亚欧激情乱码久久久久久久久| 天天操,天天操| 四季av一区二区三区| 亚洲精品乱码久久久久久动漫| 在线观看免费的av| 亚洲男人天堂av在线| 少妇熟女一区二区| www.在线观看av| 免费一级特黄特色毛片久久看| 国产免费毛卡片| 欧美精品一区二区三区免费播放| 黑森林福利视频导航| 日韩av片网站| 亚洲一级片av| www.亚洲一区二区| 久操网在线观看| 农村妇女精品一二区| 密臀av一区二区三区| gogogo高清免费观看在线视频| 手机在线国产视频| 免费看欧美一级片| 久久久免费视频网站| 国产九九在线视频| 天天做天天爱天天高潮| 欧美久久在线观看| 波多野结衣家庭教师视频| 99热这里只有精品在线播放| 吴梦梦av在线| 男人添女人下面高潮视频| 欧美综合在线观看视频| 国产三级精品三级在线| www.国产在线视频| 久久久久久香蕉| 日本女人高潮视频| 一区二区传媒有限公司|