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    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

    Species on Earth 地球可能有8百70萬物種

    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(luò)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)

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