两栖动物

A survey of amphibians found that of 5,700 known species, about 30% were at risk of extinction.

一项调查两栖动物发现的5700个已知的物种中，约有30 ％是面临著灭绝的危险。

The decline in the numbers of amphibians worldwide clearly indicates the global pollution of water and air.

全球范围内两栖动物数量的减少证明全球范围内空气和水的污染。

Previous research had revealed negative effects of atrazine on amphibians extremely early and late in development.

以前的研究表明，产生的负面影响莠去津对两栖动物极早期和晚期的发展。

It is dedicated to the scientific study of fishes, amphibians and reptiles.

该学会致力于对鱼类、两栖动物和爬行动物进行科学研究。

Try to collect some pictures of amphibians.

尝试收集一些两栖动物的图片。

The decline in the numbers of amphibians worldwide clearly indicates the global pollution of water and air.

全球两栖动物数量的减少明显标志着全球性水与大气的污染。

While many are small amphibians and reptiles, some are surprisingly big.

有些是小型的两栖动物和爬行动物，有些则是大型的。

In 1915 there were seven species of amphibians in the park, there were abundant numbers of each species.

然而，1992年，在公园内所能观察到的两栖动物物种仅为四类，且每一物种的种群数量已骤然下降。

I'm not a big fan of harvesting amphibians for cosmetics so I can't encourage it's use.

我不是一个热衷于使用两栖动物来美肤的人能，所以我不敢使用这一方法。

In 1915 there were seven species of amphibians in the park, and there were abundant numbers of each species.

然而到了1992年在公园中只观察到4种两栖动物，并且每种动物的数量都显著下降。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。