n.任期

任期；服役期；值班

tours of duty───任期；服役期；值班

tour of duties───任期；服役期；值班

out of date───过时的；过期的；废弃的

sense of duty───n.责任感；责任心

bounden duty───应该承担的责任；义不容辞的责任；天职

jury duty───在陪审团作陪审员时间；陪审员的义务

moral duty───道德义务；业

off duty───下班

pour out───v.倾吐；诉说

Troops deploying to Iraq or Afghanistan after August 1 will have their tour of duty reduced from 15 months to 12 months.───8月1日起，驻伊拉克、阿富汗的美军服役期将从15个月减至12个月。

We stayed with 406 Squadron for 18 months, a normal tour of duty at that time.───我们在406骑兵营服役18个月, 这是那时的正常服役期.

The White House later claimed the banner was the Lincoln crew's idea, with a Pentagon spokesman saying it referred to the crew having just finished its tour of duty.───白宫随后声明这个标语是全体船员的想法，五角大楼发言人赞扬全体官兵圆满完成任务。

The soldiers all used to do a six-month tour of duty in Northern Ireland.───士兵过去都要在北爱尔兰服役六个月。