Crawling (human)

Children crawling on the ground during a fire drill in Italy.

Crawling by definition is using ones knees to propel forward. It is the first gait learned by most humans. Human crawling has similar features to crawling in other primates as well as nonprimate quadrupeds, suggesting similar mechanisms.

单词	Crab walk
释义	Crab walk 原声例句 PBS地球-动物趣闻 The rounder, flatter shape of crabs lets crabs walk, run, swim and burrow more efficiently. 螃蟹更圆、更扁平的形状让螃蟹更有效地行走、奔跑、游泳和挖洞。电台实验室 Sometimes I know, like, " He's gonna love that shell! " RACHAEL: Then one day Mary saw one of her crabs walking funny. 有时我知道，“他会喜欢那个贝壳的！”瑞秋：有一天，玛丽看到她的一只螃蟹走路很奇怪。英语百科 Crawling (human) Crawling by definition is using ones knees to propel forward. It is the first gait learned by most humans. Human crawling has similar features to crawling in other primates as well as nonprimate quadrupeds, suggesting similar mechanisms.
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Crab walk

Crawling (human)