它涉及准备和实施生理的活动,器材领域的保持方面.相应的知识点应该是cover这个词的用法把,它意思很多 英文单词 ：cover 翻译中文意思|用法|音标| cover:[ 'k?] n.封面,盖子,表面 v.覆盖,涉及,包含 词形变化:形容词:coverable 名词:coverer 动词过去式:covered 过去分词:covered 现在分词:covering 第三人称单数:covers 例句与用法:1.We tried to find cover from the storm.我们设法寻找遮蔽暴风雨的地方.2.Do not try to cover a mistake.不要试图掩盖错误.3.This event will be covered live by TV.此事将由电视作现场报道.4.By sunset we had covered thirty miles.到日落的时候,我们已走了三十英里.5.Cover her while I phone the police.你用枪看住她,我给警方打电话.6.I'll cover for Jane while she's on holiday.简休假时我替补她工作.7.Our guns covered every approach to the town.我们的炮火控制了通往市区的各条道路.8.This doctor provides emergency cover (for sick colleagues).这位医生代（患病的同事）急诊值班.
