The propulsion subsystem is essential for maneuvering the MUOS satellite during transfer orbit to its final location as well as conducting on-orbit repositioning maneuvers throughout its mission life.

在把MUOS卫星变轨到最终位置以及执行任务寿命期内的在轨机动性重新配置上，该推进系统是很关键的。

youdao

He viewed his mission in life as protecting the weak from the evil.

他把保护弱者不受坏人伤害看作自己一生的使命。

《柯林斯英汉双解大词典》

Her mission in life was to work with the homeless.

她以帮助无家可归者为己任。

《牛津词典》

If so,why am I risking my life for this mission if we are not there to win it?" But more troops alone will not secure Afghanistan,says retired Staff Sergeant Brian McGough.

VOA: standard.2009.11.16

Voyager 1 was initially given a mission life of five years but has continued to perform spectacularly.

BBC: Voyager impression (Nasa)

For monasteries business is a critical subset of their mission in life: not the mission itself.

FORBES: CEOs, Egos and Logos: Overcoming the Sudden Squalls of Leadership

He did so because his philosophy, informed by his economics, was his mission in life.

FORBES: Magazine Article