Operations are more, but also a tour of duty, that is, a number of samples taken up to the sun. - Could it be that what the rock above the stones and the like do?

作业比较多，而且还有一个考察任务，就是到太阳上去采一些样品。——莫非那上面有什么岩石之类的石块吗？

youdao

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。

youdao

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。

youdao

He is believed to have had serious reservations about the upcoming tour of duty in a Muslim nation.

VOA: standard.2009.11.10

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.

VOA: standard.2010.03.08

More than 400 soldiers have marched through Ripon to mark their return from a tour of duty in Afghanistan.

BBC: Soldiers marching through Ripon

Fitzsimons joined the Royal Fusiliers at the age of 16 and was sent on a tour of duty to Kosovo.

BBC: Danny Fitzsimons jailed for Iraq security guard murders

By then Milchan had done a tour of duty in the military.

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