bipedalism

常见例句

Bipedalism - walking on two feet - is one of the defining characteristics of being human, and scientists have debated for years how it came about.
用两条腿走路是人类的基本特征之一，多年来，科学家们在这一特征的形成问题上一直争论不休。
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That proved bipedalism did not evolve on the savannah, but since hair does not fossilise, it is hard to establish when the hominids began to lose it.
这证明，两足动物的演化史并不是在大草原上进行的。但是，由于毛发不会变成化石，因此很难确定原始人类在什么时候开始失去毛发。
It therefore sheds light on a longstanding debate: whether it was bipedalism or giving birth to babies with large heads that drove changes in the shape of the human pelvis.
这也使长期的争论变得清晰起来：是否这种物种是用两只脚行走，或是它所生的后代头比较大，使其骨盆发生了改变，和人类的骨盆形状一样。