Amphibians lay their delicate, jelly-covered eggs in the water.

两栖类会在水中产下脆弱且有胶状物包裹的卵。

It grows up to a meter and a half long, making it the world's largest amphibian.

成年体长1~1'5米，这使成为世界上最大的两栖类动物。

Most reptiles lay eggs, but they are very different from the eggs of amphibians or fish.

大多数爬行类产蛋，与鱼类和两栖类的卵大有不同。

He hypothesized that it started with a cone-like tooth, as we see in many fishes, amphibians, and reptiles.

他推测牙齿起初都呈尖状，正我在鱼类、两栖类与爬行类动物中所见的那样。

Like birds, reptiles, fish, dinosaurs, and others, these species lay eggs instead of giving birth to live young.

跟鸟类、两栖类、鱼类、恐龙，以及其他动物一样，单孔目动物是卵生， 而非直接生育幼崽。

You can tell if an animal is a reptile instead of an amphibian if it has dry, scaly skin.

你能判断一种动物是爬行类而不是两栖类，会有干燥、有鳞片的皮肤。

And what's amazing about that is we can trace that fish to amphibians to reptiles to primates, all the way to us.

而且最神奇的是根据相关性追溯这些鱼类与两栖类，爬行类再灵长类动物之间的联系，所有与我人类之间有着联系。

When the eggs hatch, the young may not look much like their parents, because some amphibians must go through metamorphosis—or a big change—to become adults.

当卵孵化时，幼仔可能看着不是很像的双亲，因为一些两栖类动物必须经历变形——或者是大变化——才变为成体。

The North American Amphibian Monitoring Program is the country's largest frog-counting system. Volunteers listen for frogs, identify the species, and give population estimates. They've been doing this for over a decade.

北美两栖类监测计划是美国最大的青蛙计数系统。志愿者倾听蛙鸣，鉴定其品种，并作数量估算。十多年来，他都是这么做的。

From Hyrachyus would come three families of rhinos: the group that would lead to our modern horned rhinos; a now-extinct amphibious, hippo-like group; and the group that would lead to Paraceratherium.

从 Hyrachyus 将产生三个犀牛家族：一个将导致我现代有角犀牛的群体；现已灭绝的两栖类河马类群；以及将导致 Paraceratherium 的组。

Sentence 81 In contrast to mammals and birds, amphibians are unable to produce thermal energy through their metabolic activity, which would allow them to regulate their body temperature independent of the surounding or ambient temperature.

与哺乳动物和鸟类相反，两栖类动物不能通过的代谢活动产生热能，这使得可以脱离周围的环境温度来调节体温。