树袋熊已列为澳大利亚濒临绝种的动物之一。
对绝种的生命形式进行克隆的想法仍然属于科学幻想。
The idea of cloning extinct life forms still belongs to science fiction.
按照目前的下降速度，许多雨林动物不到十年就会绝种。
At the current rate of decline, many of the rain forest animals could become extinct in less than 10 years.
为濒临绝种的物种保留栖息地的重要性无论如何强调都不为过。
The significance of saving land for endangered species can't be overemphasized.
唉，她一死，她的本事就绝种了。
即使新的种群属于不同物种，它也可以大致填补已灭绝种群空出的生态位，保持食物网的完整。
Even if the new population is of a different species, it can approximately fill the niche vacated by the extinct population and keep the food web intact.
这种蛾子因栖息地正受到破坏，几乎绝种了。
The moth's habitat is being destroyed and it has nearly died out.
科学家不知道恐龙为何绝种了。
许多生活在数千年前的动物现已绝种。
Many animals that lived thousands of years ago are now extinct.
土生的栗树并没有绝种。
污染把这种动物推到了濒临绝种的边缘。 。
Pollution is pushing this animal to the very brink of extinction.
我们每天都会听说有的动物和植物绝种，那是永远消失的事情。
And now we hear about animals and plants going extinct every day — vanishing forever.
象白头鹰、游隼和鹗(一种鱼鹰)等鸟种几乎绝种。
Species like the bald eagle, peregrine falcon and osprey nearly disappeared.
有些动物已经绝种了，因为它们不能适应环境的变化。
Some species of animals became extinct because they could not adapt to the changing environment.
冰冻的蝾螈、吸血鬼鹿以及濒临绝种的豹有何共同之处？
What do frozen salamanders, vampire deer, and endangered leopards have in common?
通常是在篮球的早期，现在几乎绝种，早已败给不容易被盖帽的跳投。
Common in basketball's early years, it is now all but extinct, having given way to the harder-to-block jump shot.
一枝特别保留的笔为“蓝色狗”预留着，但蓝色狗是很久以前已经绝种了的品种。
A special holding pen was reserved for "Blue Dogs," a breed that went extinct long ago.
但是令人伤心的是，现在我们却站在了绝种，或者是濒临绝种，的边缘。
But sadly, we are now on the verge of becoming an extinct - or at least threatened - species.
我们能够相当合理地解释这样的绝种问题以及生物进化步伐加快的问题。
We can work out fairly plausible explanations for such major extinctions and for the continuing fast pace of evolution.
第三，若鲸鱼再次遭到公开捕杀，其数量并未庞大到可以抵抗绝种的下场。
Third, the whale populations are not strong enough to fight off extinction if they are openly hunted again.
砍伐森林危及许多动物，而人类对水和其他资源的需求极大，因而导致许多植物绝种。
Deforestation endangers many animals, and mankind's great thirst for water and other resources leads to the extinction of many plant forms.
东北虎（也叫西伯利亚虎）是世界上的六种老虎之一，我们目睹它们绝种的日子将不再遥远了。
It may not be long before we witness the extinction of one of the world's six species of tigers, the Amur (or Siberian) tiger (Panthera tigris altaica).
南极软毛海豹学名Arctocephalusgazella，由于这样的捕猎而濒临绝种。
The Antarctic fur seal, Arctocephalus gazella, would be hunted to the verge of extinction.
南极软毛海豹学名Arctocephalusgazella，由于这样的捕猎而濒临绝种。
The Antarctic fur seal, Arctocephalus gazella, would be hunted to the verge of extinction.
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