许多英国人可能将更关注自己经受的苦难，而忘却了几乎被灭绝的犹太人。
Many British people might focus more on their own suffering than that of the all-but vanished Jewish population.
边界粘土层被科学家用来确定一个灭绝物种衰落的速度。
Boundary clay layers are used by scientists to determine the rate at which an extinct species declined.
美国本土语言在欧洲殖民以前就已经存在了，现在美国已经丢失了超过三分之一的本土语言。剩下的192种语言被联合国教科文组织列为介于“不安全”和“灭绝”之间。
The US has already lost more than a third of the native languages that existed before European colonization, and the remaining 192 are classed by UNESCO as ranging between "unsafe" and "extinct".
地质记录中的其他几次大规模物种灭绝也被认为影响重大，但没有哪一次像白垩纪大灭绝那样夸张。
Several other mass extinctions in the geological record have been tentatively identified with large impacts, but none is so dramatic as the Cretaceous event.
这是达尔文为新西兰本土动植物物种所描述的，它们在来自欧洲竞争物种被引进时灭绝了。
This was described by Darwin for indigenous New Zealand species of animals and plants, which died out when competing species from Europe were introduced.
最近一份报告显示，世界634个灵长目动物物种中，48%面临灭绝的威胁，被自然保护者国际组织列为红色警告。
A recent report showed that, of the world's 634 primate species, 48% are classified as threatened with extinction on the International Union for the Conservation of Nature's "red list".
世界自然保护联盟估计，世界上被评估的物种有47677个，其中大约17300个受到灭绝威胁。
The IUCN estimates that nearly 17,300 of the world's 47,677 assessed species are under threat of extinction.
特别地，被猎杀至近乎灭绝的一种羚羊——阿拉伯羚羊，现在野生数量已超过1000只。
And one antelope in particular, the Arabian Oryx, which was hunted to near extinction, now has a wild population of over 1,000.
另一方面，灭绝的速率或许也被低估了，这意味着许多物种——远远多于我们原先认为的——在还没有被发现之前就已经灭绝了。
Extinction rates may therefore also have been underestimated, meaning
除了那些物种走向灭绝的情况，地球把这类问题从肩上抖掉的能力被经常性的低估了。
Except in those cases in which a species is driven to extinction, the Earth's ability to shrug such things off is often underestimated.
他的团队发现，在过去的122年间，至少有351种曾被认定为灭绝的物种被重新发现了。
His team determined that over the past 122 years, at least 351 species thought to have gone extinct have been rediscovered.
无论它是此前被认为已经灭绝的当地猫科动物，或是脱逃的外来宠物，博德明怪兽这种生物始终不愿消失。
Whether it is a native cat, previously thought extinct, or an escaped exotic pet, the Beast of Bodmin is a creature that refuses to disappear.
尽管不是五次物种大灭绝之一，二叠纪中期的物种灭绝依然被长期作为谜一般的事件受到重点关注。
Although not one of the "big five" mass extinctions, the mid-Permian extinction has long been considered an important, if puzzling, event.
由于至少11种鲨鱼面临灭绝，400种鲨鱼中的很多易遭伤害或濒于灭绝，现在鲨鱼在某种程度上是被保护的。
Nowadays, with at least 11 kinds of shark facing extinction and many more of the 400 species either vulnerable or endangered, sharks are to some extent protected.
养殖场也易遭寄生虫的侵害，三代虫病是其中之一，挪威的河流大约10％被其感染，灭绝了野生鲑鱼。
Farmed fish are also prone to parasites, one of which, Gyrodactylus salaris, has infected about 10% of Norway’s rivers, wiping out the wild salmon.
来之于小行星的撞击是物种灭绝的另一种可能的原因，尽管一个有报警作用的弹坑已经被找到了。
An asteroid impact is another possible cause of the extinction, though a telltale crater has yet to be found.
现在，英语作为当代世界的全球语言，已经有了大量的地域性变体——或许，作为英语协助抹灭那些单词的一种回报，越来越多的语言被灭绝了。
As the global language of the modern world, it now has lots of local variants-some recompense perhaps for the words it helps to obliterate as more and more languages become extinct.
因为在这些地区以及和这些地区相类似的地区，自然界的植物已经被砍伐净尽，许多种动物将完全有可能灭绝。
There is every likelihood that many species of animals will be made extinct because of these and similar clearances of natural vegetation.
约15%的哺乳动物物种和11%的鸟类物种被归类为濒临灭绝物种。
Around 15% of mammal species and 11% of bird species are classified as threatened with extinction.
大猩猩成为该地区内战的受害者，沦为偷猎者的目标，被采矿及伐木业的肆意开发赶出家园，在非洲各地已濒临灭绝。
The gorillas - caught up in the region's civil wars, preyed on by poachers, and crowded out of their homes by mining and logging industries - are already endangered across Africa.
世界自然保护联盟把它列为“濒危”动物，在野外两步就能使它灭绝，即因为它的栖息地森林被砍伐和烧毁以用来种植农作物。
IUCN classified it as "endangered" — two steps from extinction in the wild — because its habitat is being destroyed by slash-and-burn farming.
一则来自自然保护界罕见的好消息：全球物种灭绝危机可能被高估。
A RARE piece of good news from the world of conservation: the global extinction crisis may have been overstated.
这种物种被认为50年前就已经灭绝了，现在又在多西特的一个乡村住宅里被发现，自然会引起大家的热烈讨论。
Now a rare 'lost' species of the plant, thought to have died out 50 years ago, is causing a buzz after being unearthed at a country house in Dorset.
亦即是，在存活的物种中，只有不足15%的物种已被科学家编目，而如今的物种灭绝率意味着很多未知的生物在它们能被记录下来之前就将不复存在了。
That means scientists have cataloged less than 15 percent of species now alive-and current extinction rates mean many unknown organisms will wink out of existence before they can be recorded.
虽然长江豚的灭绝主要是因为水源污染，但对海洋哺乳动物来说，面临的最大威胁是深陷鱼网或被渔船捕获。
The greatest threats to Marine mammals are being caught in fishing nets or being struck by shipping vessels, although for the Yangtze river dolphin, pollution is a major contributor.
墨西哥钝口螈在墨西哥已经濒临灭绝，这是由于栖息地的减少和人类的捕杀。它们被当成是珍馐佳肴，就像是法国人喜欢吃的青蛙腿。
Ambystoma mexicanum is almost extinct in Mexico due to diminishing habitats and human hunting - they are regarded as a delicacy in much the way the French like frogs legs.
大猩猩的四个亚种已经有三种被列为极度濒危，而第四种也已经上了世界自然保护联盟（IUCN）发布的濒于灭绝物种红色名单。
Three of the four gorilla subspecies are already considered critically endangered, and the fourth is listed as endangered on the IUCN Red List of Threatened Species.
鸡被作为卵生动物的代表，一些已经灭绝的爬行动物可能在进化过程中将基因传给了鸭嘴兽和其他哺乳类。
Chickens were included to represent egg-laying animals, such as extinct reptiles, that passed on much of their DNA to the platypus and other mammals in the course of evolution.
作为地球上最大型的齿鲸类，抹香鲸已经被国际自然保护联盟列入了高灭绝风险的野外物种之列。
The largest toothed whales on Earth, sperm whales are listed as vulnerable-or facing a high risk of extinction in the wild-by the International Union for Conservation of Nature.
作为地球上最大型的齿鲸类，抹香鲸已经被国际自然保护联盟列入了高灭绝风险的野外物种之列。
The largest toothed whales on Earth, sperm whales are listed as vulnerable-or facing a high risk of extinction in the wild-by the International Union for Conservation of Nature.
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