verb [vt. 及物动词]爬行，匍匐前进；缓慢移动，缓慢行进；挤满，爬满；谄媚奉承，卑躬屈膝
When an insect crawls somewhere, it moves there quite slowly. 爬行
noun [具体名词]缓慢移动，徐行；爬泳，自由泳；（海边浅滩的鱼、龟等）围养池
The crawl is a kind of swimming stroke which you do lying on your front, swinging one arm over your head, and then the other arm. 自由泳
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