Tiny hairs on their legs trap air bubbles and increase their buoyancy.

它们腿上的细毛捕获气泡并增加它们的浮力。

Collared lizards can actually run on their hang legs, and reach up to 15 miles per hour.

实际上，环颈蜥奔跑时腿若悬空，并且时速能达到15英里。

I mean like jumping on their one leg and like holding hands and running and merry-go and things like that.

比如说单腿跳、拉着手转圈等游戏。

Bears are quadrupeds, meaning they walk on four legs, but they are able to stand up on their hind legs.

熊是四足动物，用四条腿走路，但他们也能用后脚站立。

Here’s how it works, players wear markers on their legs, arms, heads, and weapons that are tracked by infrared cameras.

以下是它的工作原理。玩家的腿部、手臂、头部和武器上均佩有红外摄像机跟踪标识。

And about every minute or so, an ambulance comes up, disgorges victims, people with bandages, splints on their legs, some unconscious.

大约每隔一分钟，就会有一辆救护车开过来，把伤者从车上卸下来，伤者身上缠着绷带，腿上绑着夹板，有些人甚至失去了知觉。

All Theropod dinosaurs walked on their hind legs.

所有的兽脚亚目恐龙都是用后腿行走。

Many animals sat up on their hind legs.

许多动物用后腿坐起来。

But their size also put a lot more stress on their legs and toes.

但他们的体型也给他们的腿和脚趾带来了更多的压力。

BALDOMERO OLIVERA: Another makes them stand on their back legs.

BALDOMERO OLIVERA：另一个让他们用后腿站立。

When the sailors came back, he put chains on their legs.

当水手们回来时， 他把铁链套在他们的腿上。

Other species, however, sport up to four toes on their hind legs.

然而，另一些物种突变到了后腿有四个脚趾。

And they couldn’t stand on their hind legs to reach higher leaves.

他们无法用后腿站立 以到达更高的叶子。

But soon they put up their legs on a pair of chairs and began to smoke.

但很快他们就把腿搁在一把椅子上， 开始抽烟。

In an instant, the other two were on their legs, and all were actively engaged in busy preparation.

瞬间，另外两人都站了起来，一个个都积极的忙着准备。

This dust they carry home on their hind legs. They use it to make bee-bread in the hive, as food for the young bees.

他们将金尘放在后肢带回家。他们将用金尘在蜂巢中制作蜂粮，作为小蜜蜂的食物。

Only about 40 percent of the mice that received the stem cell transplants were able to support weight on their back legs and walk.

在接受干细胞移植的老鼠中，只有约40%的老鼠能够站起来并缓慢行走。

The two convicts were handcuffed together, and had irons on their legs, —irons of a pattern that I knew well.

两个罪犯被铐在一起，腿上有铁，这是我非常熟悉的图案的铁。

Arthropods, like water striders and certain species of spider also have tiny hairs that repel water on their many long legs.

节肢动物，如水黾和某些种类的蜘蛛， 在它们的许多长腿上也长有细小的毛发， 可以排斥水。

He clicked and both dogs rose at once on their hind legs and walked sedately behind him with funny little steps.

他“咔嚓”一声，两只狗立刻用后腿站起来，迈着滑稽的小步，平静地走在他身后。