都应该用trip. 出差business trip1、go on a business trip.2、be on a business trip.例句与用法: 1. 派遣智者去出差,不须反复作交待。 send a wise man on an errand, and say nothing to him. 2. 心地真好,在 出差期间照顾 年迈的外婆。 it's very noble of you to look after my old grandmother when i was out for business. 3. 如果 匆匆忙忙地做事,那 就要出差错。 you make mistakes if you do things in a hurry.