knock off （What time do you knock off?你什么时候下班？）be off duty （She is off duty now.她已经下班了。）after work （Let's go to the cinema together after work.下班后我们一块去看电影。）
下班: to come or go or get off work；get off work；be off duty；went off shift； cone off guard； leave the office ；to get off duty; to come off work; to go off duty; to be released from duty
