两栖动物的皮肤是透水的。
为什么那位演讲者要选择这种两栖动物作为公众生物的代表呢？
Why does the speaker choose that amphibian as her representative of a public creature?
一些两栖动物通过在地下深处的休眠期内完成加速发育以适应干旱环境。
Some amphibians adapt to arid environments by completing accelerated development with resting stages deep underground.
一个类似的策略——加速发展与休息阶段相结合——也使两栖动物得以栖息在沙漠中。
A similar strategy—accelerated development combined with a resting stage—has also allowed amphibians to inhabit deserts.
像大多数的两栖动物一样，它们从幼年的“蝌蚪”状态蜕变成成年的形式——蝾螈这个物种除外，众所周知，它一生都处于幼年状态。
Like most amphibians these begin life in a juvenile "tadpole" state, then metamorphose into the adult form — except for one species, the axolotl, which famously lives its entire life as a juvenile.
拍摄爬行动物和两栖动物的技巧。
北美两栖动物监测中心是美国最大的青蛙统计机构。
The North American Amphibian Monitoring Program is the country's largest frog-counting system.
北美两栖动物监测中心是美国最大的青蛙统计机构。
The North American Amphibian Monitoring Program is the country’s largest frog-counting system.
正是在此次灭绝之前，原始两栖动物第一次爬上了陆地。
Right before the extinction events, the first proto-amphibians made it onto shore.
在超过两百年的两栖动物研究历史中，这从未被报告过。
In more than 200 years of [amphibian research] this has never been reported.
起初，天气乍凉的时候，这种两栖动物将自己埋在土壤里。
At first this amphibian deals with the cooler days by burying itself in the soil.
1915年公园中有7中两栖动物，每种的数量都很丰富。
In 1915 there were seven species of amphibians in the park, and there were abundant Numbers of each species.
世界上有六千种两栖动物，其中多达一半的两栖动物濒临灭绝。
Up to half of the world's 6, 000 amphibian species are thought to be in danger of extinction.
这种蟾蜍可能是已经消失的两栖动物中最著名的一个。
这是一种对抗鸟类、爬行动物、两栖动物等袭击的基本防卫手段。
It's basically a defense against birds, reptiles, amphibians, that sort of thing.
不过直到现在，研究者才认识到两栖动物的幼仔可能也会在水下发出声音。
Until now though, researchers did not realise that amphibian larva might also produce sounds underwater.
早期的陆地脊椎动物、早期的两栖动物，还有鳄鱼和恐龙的近亲也是如此。
This is also the same game that early land vertebrates, early amphibians and early relatives of crocs and dinosaurs were playing.
如某些两栖动物即使在完全成熟并已经度过水中生活的时期后仍然保留有鳃。
For example, certain amphibians retain fishlike gills even when fully mature and past their water-inhabiting period.
科学家们推测它们应该是当时席卷整个两栖动物世界致命的蛙壶病菌的牺牲品。
Scientists believed it was probably a victim of the deadly chytrid fungus that has devastated amphibian populations around the world.
所以爬行动物和两栖动物会感染上数以万计的真菌，而我们只会被几百种真菌侵害。
So tens of thousands of fungi can infect reptiles and amphibians, but we can only be invaded by a few hundred fungi.
鱼类首先出现在4亿5000万年前，两栖动物出现在大约3亿8000万年前。
Fish are first found about 450 million years ago, while amphibians appear roughly 380 million years ago.
在德国莱比锡动物园的帮助下，该大学正在主持一个圈养繁殖两栖动物的研究项目。
The university, with the help of Germany's Leipzig zoo, is leading a project to breed amphibians in captivity.
两栖动物是由于气候变暖而濒临灭绝的一种动物，他们的主要问题是细胞不太容易保存。
One problem is that the cells of amphibians—among the animals most endangered by a warming world—have seemed almost impossible to preserve.
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。
However, in 1992 there were only four species of amphibians observed in the park, and the Numbers of each species were drastically reduced.
动物园的保护中心曾经尝试保存并从两栖动物的皮肤细胞繁育，但这确实是个棘手的工作。
The zoo's Institute for Conservation Research has experience preserving, and breeding from, amphibian skin cells. It is, however, a tricky business.
野生动物纪录片制作者应该尊重动物们——比如这些多情的两栖动物——的隐私吗？
Should wildlife documentary makers respect the privacy of creatures like these amorous amphibians? An academic claimed they should?
蟾蜍和其他两栖动物对环境化学的变化非常敏感，我认为它们应该能够感知到这些气体和带电粒子。
Toads and amphibians are very sensitive to changes in environmentalchemistry and I think these gases and charged particles could have beendetected by the toads.
蟾蜍和其他两栖动物对环境化学的变化非常敏感，我认为它们应该能够感知到这些气体和带电粒子。
Toads and amphibians are very sensitive to changes in environmentalchemistry and I think these gases and charged particles could have beendetected by the toads.
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