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.
可以肯定的是，这些水陆两栖物种的数据出现在接近三角坐标中间的位置，位于水栖海龟和陆栖乌龟的坐标点之间。
Sure enough, these amphibious species show up on the triangular graph approximately half way between the "wet cluster" of sea turtles and the "dry cluster" of land tortoises.
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.
北美两栖类监测计划是美国最大的青蛙计数系统。
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.
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.
这个世界对于青步甲来说简直就是一个两栖类美食餐厅。
The world is an amphibian smorgasbord to the Epomis beetles.
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.
他们把步甲放进笼子，并一只一只地放进上面提及的五种两栖类。
They put the Epomis beetles in a cage with each of the five aforementioned amphibians one by one.
把摩托车改成水陆两栖车驶进下龙湾，对度假者来说是有点过分了。
Converting the bikes to amphibious vehicles to explore Halong Bay might be a step too far for a holiday.
一个旨在重新发现被认为灭绝的两栖物种的代表团收获了其第一个发现。
A mission aimed at rediscovering amphibian species thought to be extinct has yielded its first results.
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.
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.
鸟类和哺乳类靠质生存,而非以量取胜，这与鱼类和两栖类不同。
Birds and mammals invest in quality and not quantity, as opposed to fish and reptiles.
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.
它们古老的两栖特征可能是理解恐龙时代的繁荣及它们最终幸存下来的关键。
Their amphibious talents in the past may be the key to understanding how they flourished in, and ultimately survived, the dinosaur era.
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.
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.
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.
容格斯说，真正的问题是为什么我们放弃两栖战略，而选择目前的全时陆地生活。
The real question, Jungers says, is why we abandoned that strategy or chose an alternative strategy — the alternative being full-time living on terra firma.
容格斯说，真正的问题是为什么我们放弃两栖战略，而选择目前的全时陆地生活。
The real question, Jungers says, is why we abandoned that strategy or chose an alternative strategy — the alternative being full-time living on terra firma.
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