首要: of the first importance; fir ...任务: task; job次要任务: secondary mission; secondary task重要任务: vital taskimportant mission主要任务: primary mission头等重要任务: a task of primary importance主要任务大队: primary mission group必要任务属性理论: requisite task attributes theory执行次要任务的飞机: second-mission aircraft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飞机完成主要任务能力的分析: aircraft mission analysis运行调整的主要任务及目的: main task and purpose of operation adjustment; main task and purpose of the operation adjustment第一,首要: prim首先,首要: above all首要,尤其: a above all; above all首要的: basic; chief; first-line; foremost; paramount; premier; prime; principal首要地: first and foremost首要事: pre-requisite首要性: primacy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不需要任何人: don't need anybody不要任其自流: don't let things slide. oneself城市首要性: urba riamcy; urban priamcy首席的;首要的: chief (d05)首先, 首要地: beyond all