mission/ˋmIʃən; ˈmIʃ$n/n [C]1 an important job that someone has been sent to a place to do 任务﹐使命: Our mission was to find out everything about their plans. 我们的任务是查出有关他们计划的所有情况。a bombing mission 轰炸任务a peacekeeping mission 维和任务2 a group of important people who are sent by their government to another country to discuss something or collect information〔政府派往国外的〕代表团﹐工作团﹐使团: a Canadian trade mission to Japan 加拿大派往日本的贸易代表团3 something that you feel you must do because it is your duty 天职﹐使命: His mission was to help young people in his local community. 他的使命是帮助当地社区的年轻人。