Species on Earth 地球可能有8百70萬物種
Species on Earth 地球可能有8百70萬物種
By Paddy Clark, BBC News
Scientists warn that human activity may threaten the survival of some species
媒體英語會帶大家一起學習 BBC 撰稿人在報道世界大事時常用到的單詞和短語。
Background: 科學家們研究出一項新的方式來估計在地球上生物的總數(shù)，據(jù)統(tǒng)計一共有8百70萬種不同類型的生物。這同過去使用的評估方式得到的結(jié)果差距很大。科學家們的發(fā)現(xiàn)將在網(wǎng)絡科研期刊《生物科學公共圖書館》上發(fā)表。
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It's generally accepted that very many species have yet to be discovered, but until now nobody has devised a reliable way to find out just how many. Suggestions for total numbers have ranged from 3 million to a hundred million, but most of these have been no more than intelligent guesses.
Scientists from the Census of Marine Life devised a counting method by identifying numerical patterns linking data on known species. They reckon that there should be about 8.7 million types of living organisms, three-quarters of them animals and the rest plants.
However, since the introduction of the current classification system by Carl Linnaeus in 1758, only a million and a quarter have been catalogued.
The scientists warn that human activity is hastening extinctions, and they note a touch wistfully, that many of the hitherto unknown species may vanish before we even know of their existence.
Glossary 詞匯表 (收聽發(fā)音, 請單擊英語單詞)
- to devise研究出
- reliable可信的，可靠的
- an intelligent guess聰明的猜測
- to reckon估計
- a classification system分類系統(tǒng)
- to catalogue分類記載
- to hasten加速
- wistful愁悶的，深思的
- hitherto迄今
- to vanish消失
