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当前位置:首页 -> 12级英语阅读 - > 地球步入第六次生态大灭绝
地球步入第六次生态大灭绝
添加时间:2017-08-31 21:11:22 浏览次数: 作者:未知
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  • The sixth mass extinction1 of life on Earth is unfolding more quickly than feared, scientists have warned.

    科学家们日前警告称,地球生物“第六次大灭绝”的速度比人们担心的还要快。

    More than 30% of animals with a backbone2 - fish, birds, amphibians3, reptiles4 and mammals - are declining in both range and population, according to the first comprehensive analysis of these trends.

    对动物灭绝趋势的首项全面分析显示,超过30%的脊椎动物(鱼类、鸟类、两栖动物、爬行动物和哺乳动物)的种类和数量都在减少。

    Around a decade ago, experts feared that a new planetary wipeout of species was looming5.

    专家们在大约十年前就担心新一轮全球性物种灭绝即将到来。

    Today, most agree that it is underway, but the new study suggests that it is already ratcheting up a gear.

    现在多数专家都一致认为新一轮物种灭绝已经开始,但新研究表明,物种灭绝的速度已经加快。

    The 177 mammal species that were monitored have lost at least a third of their original habitat between 1900 and 2015, researchers found. The loss of biodiversity has recently accelerated.

    研究人员发现,在1900年至2015年间,他们所观测的177种哺乳动物已经失去了至少1/3的原始栖息地。生物多样性的减少最近加速了。

    Several species of mammals that were relatively6 safe one or two decades ago are now endangered, including cheetahs7, lions and giraffes, the study showed.

    该研究显示,包括猎豹、狮子和长颈鹿在内的数种哺乳动物在一二十年前还相对安全,而现在已经处于濒危状态。

     12级    英语科普 


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    1 extinction [ɪkˈstɪŋkʃn] sPwzP   第8级
    n.熄灭,消亡,消灭,灭绝,绝种
    参考例句:
    • The plant is now in danger of extinction. 这种植物现在有绝种的危险。
    • The island's way of life is doomed to extinction. 这个岛上的生活方式注定要消失。
    2 backbone [ˈbækbəʊn] ty0z9B   第9级
    n.脊骨,脊柱,骨干;刚毅,骨气
    参考例句:
    • The Chinese people have backbone. 中国人民有骨气。
    • The backbone is an articulate structure. 脊椎骨是一种关节相连的结构。
    3 amphibians [æm'fɪbɪənz] c4a317a734a700eb6f767bdc511c1588   第9级
    两栖动物( amphibian的名词复数 ); 水陆两用车; 水旱两生植物; 水陆两用飞行器
    参考例句:
    • The skin of amphibians is permeable to water. 两栖动物的皮肤是透水的。
    • Two amphibians ferry them out over the sands. 两辆水陆两用车把他们渡过沙滩。
    4 reptiles ['reptaɪlz] 45053265723f59bd84cf4af2b15def8e   第7级
    n.爬行动物,爬虫( reptile的名词复数 )
    参考例句:
    • Snakes and crocodiles are both reptiles. 蛇和鳄鱼都是爬行动物。 来自《简明英汉词典》
    • Birds, reptiles and insects come from eggs. 鸟类、爬虫及昆虫是卵生的。 来自《现代汉英综合大词典》
    5 looming ['lu:mɪŋ] 1060bc05c0969cf209c57545a22ee156   第7级
    n.上现蜃景(光通过低层大气发生异常折射形成的一种海市蜃楼)v.隐约出现,阴森地逼近( loom的现在分词 );隐约出现,阴森地逼近
    参考例句:
    • The foothills were looming ahead through the haze. 丘陵地带透过薄雾朦胧地出现在眼前。 来自《简明英汉词典》
    • Then they looked up. Looming above them was Mount Proteome. 接着他们往上看,在其上隐约看到的是蛋白质组山。 来自英汉非文学 - 生命科学 - 回顾与展望
    6 relatively [ˈrelətɪvli] bkqzS3   第8级
    adv.比较...地,相对地
    参考例句:
    • The rabbit is a relatively recent introduction in Australia. 兔子是相对较新引入澳大利亚的物种。
    • The operation was relatively painless. 手术相对来说不痛。
    7 cheetahs [ˈtʃi:təz] 49fe48184ec612a4c6ab48e2544552ef   第10级
    n.(奔跑极快的)非洲猎豹( cheetah的名词复数 )
    参考例句:
    • Unlike lions or cheetahs, leopards are secretive, solitary cats. 花豹不像狮子或印度豹,是属于较神秘而隐居的大猫。 来自互联网
    • Among this lot are cheetahs, lions, leopards, rhinoceroses, spotted hyenas and elephants. 印度豹、狮子、花豹、犀牛、斑点土狼、大象等,都是此地的居民。 来自互联网

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