a tour of duty

基本解释

IDA assigns sailors in the US navy to new jobs when they finish a tour of duty and has to juggle naval policies, job requirements, changing costs and sailors' needs.
当美国海军水兵完成他们的值勤的时候，艾达负责给他们分配新的任务，并且必须合理协调海军政策、工作需求、替换成本和水兵需要。
Biden will soon have a personal connection to the war in Iraq. His eldest son, Beau, a captain in the Delaware National Guard, is scheduled to leave for a tour of duty in Iraq in October.
拜登本人很快就将与美国的对伊战争联系在一起，因为他的长子是德拉瓦州国民警卫队的一名上尉，将于今年10月被派往伊拉克。
Relatives and friends of Telford said the 37-year-old, a long-serving guardsman in the Grenadiers, had flown out to Afghanistan last month for a tour of duty with the Royal Military police.
马修·泰尔福德中士的亲戚朋友说这位37岁的卫兵已在掷弹兵近卫团服役多年，他上月随同皇家宪兵队（Royal Military Police）飞到阿富汗参加义务巡逻。

He is believed to have had serious reservations about the upcoming tour of duty in a Muslim nation.
U.S.Army Sergeant Jeremy Tormala, on his second tour of duty in Iraq, thought the elections gave a good indication that Iraqi forces will be up to the task.

By then Milchan had done a tour of duty in the military.
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An officer returning from a tour of duty in Afghanistan is unlikely to be competing for a place with a private equity analyst.
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