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 missionlife.
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。
2
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》
3
Her mission in life was to work with the homeless.