Species extinction is a natural phenomenon.
物种灭绝是一种自然现象。
Species extinction: The destruction of natural habitats.
灭绝原因：自然栖息地遭到破坏。
The rate of species extinction is accelerating to dangerous levels.
物种灭绝的速度不断加快，已经敲响了警钟。
Before the existence of human, the process of biological evolution is accompanied with species extinction.
人类出现之前，生物进化的过程中就伴随着物种的灭绝。
We all know that panda is a species that is on the edge of extinction.
我们都知道熊猫是一种濒临灭绝的物种。
Volcanic explosions could bring the whole animal species to extinction.
火山爆发可能会使所有的动物灭绝。
The society was set up to preserve endangered species from extinction.
成立这个协会是为了保护濒危物种不致灭绝。
An operation is beginning to try to save a species of crocodile from extinction.
一项行动正在展开来拯救一个鳄鱼种类使其免遭灭绝。
Hundreds of tree species face extinction.
很多树种濒临灭绝。
Nearly a quarter of plant species are threatened with extinction.
近四分之一的植物物种有灭绝的危险。
I don't see any future for whale species except extinction.
我认为鲸鱼物种除了灭绝，毫无未来。
Beyond that, the lizard-extinction model could perhaps be applied to other species.
除此之外，蜥蜴灭绝模型可能还适用于其它物种。
Changes in land use may result in loss of habitat and extinction of species.
在土地使用的变化可能导致生境和物种灭绝的损失。
Some plant species are threatened with extinction in the rain forest.
雨林中某些植物物种正面临着灭绝的危险。
Today the species is on the brink of extinction.
今天的物种处于灭绝的边缘。
The mass extinction event killed off the dinosaurs and many other animal and plant species.
中找到了元素铱岩层，而这通常会被发现于小行星中。 这次灭绝事件杀光了恐龙以及许多其他动植物物种。
More and more species are being driven to extinction every year.
越来越多的物种灭绝每年驱动。
The society was set up to preserve endangered species form extinction.
成立这个协会是为了保护濒危物种不致灭绝。
A species that is on the brink of extinction.
处在灭绝边缘的物种。
The institute was set up to preserve the endangered species from extinction.
成立这个协会是为了保护濒危物种免于灭绝。
This organization's mission is to protect plant species threatened with extinction.
这个组织的目标是保护有濒临灭绝的植物物种。
Many species are at the edge of extinction.
许多物种濒临灭绝。
Second, they also serve as a way of protecting some species from extinction.
其次，动物园也具备保护某些动物免于绝种的功能。
That's why all eight species are being hunted to the brink of extinction.
这就是所有八个品种正被猎杀至濒临灭绝的原因。
The extinction of a species today might lead to unimaginably negative consequences in the future.
某一物种今日的灭绝可能会导致未来无法想象的负面效果。
A lot of species are facing extinction.
许多物种正濒临绝种。
A lot of species are facing extinction.
许多物种正濒临绝种。
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