n.卫兵( guard的名词复数 )；警戒；警卫队；防护装置v.保护，控制( guard的第三人称单数 )； 英英释义： guard[ 'ga:dz ]n.a person who keeps watch over something or someonethe person who plays that position on a football team"the left guard was injured on the play"a device designed to prevent injur