biped

Some biologists, along with Plato, define hominid as “featherless biped.”

有些生物学家，作为柏拉图的跟随者，定义原始人类为“没有羽毛的两足动物” 。

"It is still difficult for a biped robot to walk on a bumpy surface, even on Earth," the official said.

这位官员说，“即使是在地球上，两足机器人在颠簸的路面行走仍然有困难。”

Whether it's through the forest or across the savanna, it doesn't matter — you're a biped when you're moving, " Jungers says.

无论是穿过森林或是走过热带稀树草原都没关系，当你运动时，你就是一只两足动物，”容格斯说。