人类出现之前，生物进化的过程中就伴随着物种的灭绝。
Before the existence of human, the process of biological evolution is accompanied with species extinction.
达尔文在南美洲发现一些类似于现代物种的灭绝动物化石。
In South America Darwin found fossils of extinct animals that were similar to modern species...
例如，一个移居的物种可能会因缺乏食物而灭绝。
A translocated species could die out from lack of food, for example.
我们都知道熊猫是一种濒临灭绝的物种。
We all know that panda is a species that is on the edge of extinction.
是什么导致了如此高的物种灭绝率？
这是个关于在大规模的物种灭绝时代保护野生动物的故事。
This is the story of wildlife conservation in the age of mass extinction.
物种灭绝的速度不断加快，已经敲响了警钟。
The rate of species extinction is accelerating to dangerous levels.
许多动物种类都处于濒临灭绝的危险中。
近四分之一的植物物种有灭绝的危险。
Nearly a quarter of plant species are threatened with extinction.
现在假设，在这段时间里，你的宠物成为濒临灭绝的物种。
Now imagine that during that time your pet became an endangered species.
目前，越来越多的物种濒临灭绝，这是一个重大的环境问题。
The rampant loss of species occurring today is a major environmental concern.
今天，夏威夷是世界上最热门的避暑胜地，因为她受威胁和濒临灭绝的物种。
Today, Hawaii is the world's hottest hot spot for threatened and endangered species.
一颗约六英里直径的陨石，被认为是造成恐龙物种灭绝的罪魁祸首。
One, about six miles across, is thought to have wiped out the dinosaurs.
丹顶鹤是世界上濒临灭绝的物种之一。
Red-crowned cranes are one of the world's most endangered species.
这包括全球变暖和动植物种群的灭绝。
These include global warming and loss of some kinds of plant and animal life.
地球上的很多物种都灭绝了，但是crurotarsan平安的渡过了这次危机。
Many of the planet’s species went extinct, but the crurotarsans weathered the storm.
雨林中某些植物物种正面临着灭绝的危险。
Some plant species are threatened with extinction in the rain forest.
这个组织的目标是保护有濒临灭绝的植物物种。
This organization's mission is to protect plant species threatened with extinction.
l我们是不是欠下了一笔物种灭绝的债？
处在灭绝边缘的物种。
越来越多的物种灭绝每年驱动。
More and more species are being driven to extinction every year.
在土地使用的变化可能导致生境和物种灭绝的损失。
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。
Changes in land use may result in loss of habitat and extinction of species.
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