居住在山区的大猩猩已濒临灭绝。
这些物种中的许多已经消亡或是正濒临灭绝。
Many of these species have vanished or are facing extinction.
19世纪，近亲婚配几乎导致了皇室宗族的灭绝。
In the 19th century, inbreeding nearly led to the extinction of the royal family.
科学家正试图把已灭绝动物的特征与现存类似动物相比较。
Scientists are attempting to compare features of extinct animals with living analogues.
由于森林砍伐，很多树种濒临灭绝。
Hundreds of tree species face extinction because of deforestation.
它们将成为第二大灭绝的鸟类。
They will tum out to be the second-largest species of birds to become extinct.
全球变暖的后果之一是物种灭绝。
这一时期的灭绝并不彻底。
在研究灭绝的动物时，总要做一些猜测。
There's always some guesswork when studying extinct animals.
众所周知，熊猫濒临灭绝。
As is known to all, the panda is in danger of becoming extinct.
这些动物由于遭到无情的捕猎而濒于灭绝。
The animals were ruthlessly hunted to the verge of extinction.
在这些濒危动物灭绝之前，我们必须保护它们。
We must protect these endangered animals before they become extinct.
这在导致整个鲑鱼种群灭绝的案例中最为明显。
This is most evident in cases where it results in the extinction of entire salmon populations.
狐猴引人注目的外表可能最终导致了它的灭绝。
The aye-aye's striking appearance may end up causing its extinction.
结果，世界上的森林正面临着逐渐灭绝的处境。
As a result, the world's forests are now facing gradual extinction.
一种理论是，它们是由于人类的猎杀而灭绝的。
One theory is that they were hunted to extinction by humans.
除非减少对老虎的捕猎，否则野生老虎将很快灭绝。
Unless tiger hunting decreases, tigers will soon be extinct in the wild.
也许恐龙无法忍受这些极端的温度变化于是灭绝了。
Perhaps dinosaurs could not tolerate these extreme temperature changes and became extinct.
全球变冷之后才是全球变暖，那时还没有物种灭绝。
You know, global cooling followed by global warming, and there was no extinction then.
化石记录表明，在中生代末期，许多动植物突然灭绝。
The fossil record suggests that there was an abrupt extinction of many plants and animals at the end of the Mesozoic era.
许多物种在地质上很短的时间间隔内灭绝的情况称为大灭绝。
Cases in which many species become extinct within a geologically short interval of time are called mass extinctions.
濒临灭绝物种的名单中列有将近600种鱼。
专家们说如果那座小岛得不到保护，此次泄露有可能使该海湾地区的海龟灭绝。
Experts say if the island is not protected, the spill could wipe out the gulf's turtle population.
这些美丽的动物濒临灭绝。
有些种类甚至面临灭绝的危险。
公园里的麋鹿有灭绝的危险。
其中一些已经濒临灭绝。
尤其是河里的中华白鲟已经灭绝了。
因此，许多动物正在灭绝，比如企鹅和北极熊。
As a result, many animals are dying out, such as penguins and polar bears.
因此，许多动物正在灭绝，比如企鹅和北极熊。
As a result, many animals are dying out, such as penguins and polar bears.
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