When testing different diameter pipeline or vessel, the orbit module is changed only.

检测不同管径的管道时，仅需更换轨道模块。

youdao

Eagle moved into the orbit of the command module.

VOA: special.2009.07.15

The astronauts are aiming to complete China's first manned docking with the Tiangong-1 module already in orbit, an important first step towards China's aim of creating a working space station by 2020.

BBC: China's female astronaut quandary

The module will remain in orbit after the mission.

NPR: China Launches Manned Spacecraft

William Safire prepared a eulogy for Richard Nixon to deliver should the lunar module fail to get back up into orbit.

FORBES: Neil Armstrong: Ode to Trustmarks