Starliner's propulsion system is part of what NASA describes as the spacecraft's " service module."
“星际客机”的推进系统是NASA所称的“服务舱”的一部分。
VOA常速英语_美洲
The service module is really key for the Orion vehicle and for NASA achieving the Artemis mission.
服务舱是猎户座飞船的关键，也是NASA完成阿耳特弥斯的任务。
VOA慢速英语_科技
Stich said, " We're just taking a little more extra time to review all the data and also learn as much as we can while we have this service module in orbit."
A service module (or equipment module) is a spacecraft compartment containing a variety of support systems used for spacecraft operations. Usually located in the uninhabited area of the spacecraft, the service module is jettisoned upon the completion of the mission, and usually burns up during atmospheric reentry. The service module is the equivalent to the spacecraft bus assembly on unmanned spacecraft.