extinction

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。

The mountain gorilla is on the verge of extinction .

居住在山区的大猩猩已濒临灭绝。

Many species have been shot to the verge of extinction .

很多物种已经被猎杀到灭绝的边缘。

An operation is beginning to try to save a species of crocodile from extinction

一项努力拯救一个鳄鱼物种、使其免于灭绝的行动已经开始。

Hundreds of tree species face extinction

许许多多树种濒临灭绝。

They have driven the rhino to the edge of extinction

他们已经令犀牛濒临灭绝。

30 percent of reptiles , birds , and fish are currently threatened with extinction .

目前，30%的爬行动物、鸟类和鱼类面临灭绝的危险。

The loggers say their jobs are faced with extinction because of declining timber sales .

伐木工人说由于木材销量下降，他们的工作恐不复存在。

The centuries-old ritual seems headed for extinction .

延续了几个世纪的仪式似乎要面临消亡。

Many species are in peril of extinction because of our destruction of their natural habitat .

许多物种由于我们破坏了它们的自然环境，现在正面临灭绝的危险。

We shall simply be resigning ourselves to extinction unless we carry on the four modernizations .

如果不搞四个现代化，我们就只有束手待毙。

The animals were ruthlessly hunted to the verge of extinction .

这些动物由于遭到无情的捕猎而濒于灭绝。

This species of animal is on the verge of extinction .

这种动物已几近灭绝。

This is the story of wildlife conservation in the age of mass   extinction .

也是个关于在大规模的物种灭绝时代如何保护野生动物的故事。

The researchers asked fifth graders and college students to create a recovery plan to protect bald eagles from extinction .

研究人员要求五年级学生和大学生制定一个恢复计划,以保护秃鹰免遭灭绝。

From the standpoint of a traditional educator , this outcome indicated that schooling had failed to help students think about ecosystems and extinction , major scientific ideas .

从传统教育者的观点来看,这一结果表明,学校教育未能帮助学生思考生态系统和生物灭绝这些主要科学思想。

The wallet is heading for extinction .

钱包快要消失了。

The weak links may thus keep species from driving one another to extinction ．

因此，这些薄弱环节也许能避免各个物种互相驱使走向灭绝。

However , the two zookeepers didn 't want to see the extinction of this precious species .

然而,这两位动物园管理员并不想看到这一珍贵物种的灭绝。

If a predator can eat several species , it can survive the extinction of one of them ．

如果一个掠食动物以好几个物种为食，那这些物种中其中一个就算灭绝了，它也能存活下来。

But before they can be assured , more efforts must be made , because the population of the crane in the wild is on the decline , and many other species appear headed toward extinction .

它们得到保护之前需要我们做更多努力，因为野生鹤的数量正在下降，许多其他物种也似乎正在走向灭绝。

The island 's way of life is doomed to extinction .

这个岛上的生活方式注定要消失。

The economists say the competition otter to the brink of extinction .

经济学家们说，竞争把海獭推到了灭绝的边缘。

The finds imply the reasons for their extinction were complex , and factors such as climate change may have played a role .

这些发现意味着尼安德特人灭绝的原因是复杂的，而且气候变化等因素可能也造成了一定程度的影响。

Analysis of Diesel Soot Formation with a Laser Light Extinction Method

用激光消光方法分析柴油机碳烟的形成

Investigation to pollution from coke extinction and its influence analysis

熄焦塔污染源调查与影响分析

Study on Extinction Fiber Production via Water Prepared Titanium Dioxide

用水配制二氧化钛生产消光纤维的研究

Study on middle infrared spectrum and extinction performance of red phosphorus smoke

红磷烟幕中红外光谱和红外消光性能研究

Improving Design to the Performance of Arc Extinction in Shaft Hoist

矿井提升机消弧性能的改进设计

Are said to be endangered or at high risk of extinction .

岌岌可危或处于高危状态。