1．突然大笑burst into laughter=burst out laughing , 突然大哭burst into tears=burst out crying
2．do business做生意 , be on business在出差
3．忙于做某事情be busy in doing sth=be busy with sth
4．按小时得到工资get paid by the hour
5．call for 需要, call on 号召,呼吁, call off 取消 ,call on sb=call at sp拜访
6．保持镇静remain calm , 冷静下来calm down
7．can`t help doing sth 情不自禁去做某事情, can`t help but do sth 只能去做某事情
