短语词组短語be out on business 父母出差to be on business 出差be on a business trip 出差;受派遣暫時到外地辦公事或負擔臨時任務;是什麽意思;將在一個商務之旅be away on official business 公出;出差I will be on business 我將會出差 返回 be on business