Moreover, Wentian has been equipped with the environmental control and life support system, which is a complete backup of the system in Tianhe.

而且问天还配备了环控生命保障系统，这是对天和的完整系统备份。

It is about the assembly and testing of an environmental control and regenerative life support system inside the Wentian lab module, according to China Manned Space Agency (CMS).

据中国载人航天工程办公室（CMS）称，这是关于在问天实验室舱内组装和测试再生式环控生保系统。