他们正在准备太空任务。

They are preparing for a space ___mission.

医生们前往偏远地区执行医疗援助任务。

The doctors went to remote areas to carry out a medical aid ___mission.

教育贫困地区的孩子是他的使命。

Educating children in poor areas is his ___mission.

她在教会运营的救助无家可归者的机构工作。

She works at a church-run ___mission that helps homeless people.