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.
很多物种会逐渐灭绝。
熊猫是食草的熊，吃的食物不那么有营养，而且在逐渐灭绝。
The panda is a species of bear that has gone herbivorous and eats a type of food that isn't all that nutritious, and that dies out sporadically.
在50年代末，她发现一些鸟类的逐渐灭绝和人们使用的除虫剂有关。
She noticed, in the late '50s, the gradual disappearance of some birds, and linked it to our use of 1 pesticides.
当一种动物不能在每一代都繁殖出足够的后代而与其死亡率保持一致时，它就会逐渐灭绝了。
An animal species becomes extinct when it fails to produce enough young in each generation to keep pace with the death-rate.
遵守过去的方式，佩内达-热尔的一些农夫们仍然在用长角牛犁田，但是这种牛正在逐渐灭绝。
Hewing to the old ways, some farmers in Peneda-Gerês still plow behind a team of longhorns, but they are a vanishing breed.
有些物种，比如非洲南部的跳羚，也对生活在新的地方极不适应，估计它们将逐渐灭绝而不会迁移。
Some species, such as the springbok of southern Africa, are also highly resistant to living in new areas and are expected to die out rather than move.
更进一步说，我们要使疾病传播率降低，使得每一感染病例至多仅能传染一名新患者，这样这种疾病将逐渐灭绝。
Rather, the transmission rate needs to be pushed down so that each malaria infection is passed on to less than one new person and the disease gradually dies out.
世界上除了热带雨林以外，在其它任何地方都找不到的珍稀鸟类和珍稀动物，在这世纪之交正在以每年消失一种的速度逐渐灭绝。
Rare birds and animals that cannot be found anywhere else in the world have been disappearing at the rate of one a year since the turn of the century.
世界上除了热带雨林而外，在其他任何地方都找不到的珍稀鸟类和珍稀动物，在这世纪交替的时候正在以每年消失一种的速度逐渐灭绝。
Rare birds and animals that cannot be found anywhere else in the world have been disappearing at the rate of one a year since the turn of the century.
气候的突然变化使原本逐渐消融的冰川再次凝结，同时北美洲哺乳动物中有35个科完全灭绝。
The change in climate caused retreating glaciers to advance once again, and coincided with the extinction of 35 families of North American mammals.
英国环保组织保护蝴蝶协会14日公布的一项报告显示，英国的银斑弄蝶的数量逐渐得到了恢复，而25年前，这种蝴蝶曾一度濒临灭绝。 这给致力于拯救其他种类蝴蝶的环境保护主义者们展示了一线希望。
The recovery of a butterfly that was threatened with extinction in Britain 25 years ago is providing a glimmer of hope to conservationists trying to save other species.
其它四次大灭绝对生物进化产生了巨大的影响，动物因此逐渐处于优势地位，但是，奥陶纪末期大灭绝发生前后，处于支配地位的动物物种没有发生变化。
Although the four other Big Five extinction events led to huge changes in which animals rose to prominence, the same animals that dominated before the end-Ordovician dominated afterward.
他们说潜游让逐渐人们想要去保护鲨鱼，当一些种类的鲨濒临灭绝的时候。
They say it makes people want to protect sharks at a time when some kinds of shark are dying out.
但是由于沙冬青分布区生境条件恶劣，使得这一珍贵物种已逐渐濒临灭绝。
But the condition of distributing area of Ammopiptanthus is so bad that the value species is being die out.
地球出现生命以来，生物物种数量动态增长，但随着人类活动的出现，生物物种灭绝速度逐渐加快。
Since life appeared on earth, biological species grew dynamically. However, the speed of species extinction is gradually accelerating as human being came to dominance.
他认为，连接各保护区的森林通道的逐渐消失将会是导致老虎灭绝的最后一击。
What will finish off the tiger as a viable species, he says, is the final destruction of the remaining corridors of forest that link the parks together.
他认为，连接各保护区的森林通道的逐渐消失将会是导致老虎灭绝的最后一击。
What will finish off the tiger as a viable species, he says, is the final destruction of the remaining corridors of forest that link the parks together.
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