crawlv.爬行；卑躬屈膝；自由式游泳n.爬行；匍匐而行；[体]自由式游泳Crawley reovirus克劳利呼肠孤病毒crawling pattern斜落图形crawl into a hole爬进洞里crawler equipment履带式机械crawling movement爬行运动crawler crane car履盖曲柄车Crawling Mayflies爬行蜉蝣(蜉蝣目,小蜉科)Crawling practice爬行训练crawling strategy爬行策略crawler-tractorn.履带拖拉机