首要 of the first importance; first; chief 首要分子 major culprit; ringleader; 首要任务 the most important task; 首要原因 first cause; 首要战犯 chief war criminal; 首相是政界的首要人物。 the premier occupies the foremost place in the world of politics
任务 assignment; mission; task; duties; job 接受任务 receive an assignment; accept an assignment; 担负艰巨的任务 shoulder heavy responsibilities; 我们保证完成任务。 we guarantee to fulfil [complete] our mission. 任务重, 时间紧。 the task is hard and we are pressed for time.; 任务观点 get-it-over-and-done-with attitude; perfunctory attitude; routinist point of view