They share some qualities like walking on two feet, or bipedalism.

他们都有一些共同的特征，比如用两只脚走路，或者两足行走。

Brain size tripled, and bipedalism freed the hands for communication.

脑容量增加了两倍，两足行走解放了双手进行交流。

Bipedalism has evolved separately in humans and birds, so it is convergent trait.

双足行走在类和鸟类中分别进化，因此它是趋同性状。

It’s actually pretty unique that humans typically stand up and walk around on two legs, which is known as bipedalism.

事实上，类通常用两条腿站起来走动， 这实际上是非常独特的，这被称为双足行走。

Some of the features such as bipedalism and bird-like hips are shared with other dinosaurs and are not exclusive to this group.

一些特征，如双足行走和类似鸟的臀部与其他共享，并不是该群体独有的。

The over-reliance on living apes to study humans has stunted evolutionary theories, including how humans evolved bipedalism, the ability to walk on two hind feet.

过度依赖活猿来研究类已经阻碍了进化理论，包括类如何进化出双足行走，用两只后脚行走的能力。

With anatomy in perfectly aligned to bipedalism and lifestyles becoming increasingly static our muscles and airways may experience strain that good posture and movement can correct.

由于解剖结构与两足行走完全一致，而且生活方式变得越来越静态，我们的肌肉和气道可能会受到拉伤，而良好的姿势和运动可以纠正这种拉伤。

While many other primates are capable of bipedalism, you’ll see them moving around on all fours, known as quadrupedalism, a lot more than you will a human.

虽然许多其他灵长类动物也有双足行走的能力， 但您会看到它们四足行走，即四足行走， 比类多得多。

This suggests that upright posture could have been the starting point for bipedalism, instead of hanging ability—a theory that could not have emerged from studying living apes alone.

这表明直立姿势可能是双足行走的起点，而不是悬挂能力——这一理论不可能仅从对活猿的研究中得出。