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The Shenzhou XX mission crew members aboard China's Tiangong space station completed their first spacewalk on Thursday afternoon, the China Manned Space Agency said.

中国载人航天工程办公室称，神舟二十号任务宇航员于上周四下午在中国天宫空间站完成了首次太空出舱。

During the eight-hour operation, mission commander Senior Colonel Chen Dong and crew member Colonel Chen Zhongrui floated out of the Tianhe core module and installed debris-shielding devices, which had been put in place by the robotic arm before the spacewalk.

在长达8小时的操作中，任务指令长陈冬大校和宇航员陈中瑞大校从天和核心舱中漂浮出来，安装了太空出舱前由机械臂安装的碎片防护装置。

The pair also checked the condition of extravehicular instruments and fixed broken parts, according to the agency.

据航天工程办公室称，两人还检查了舱外仪器的状况，并修复了损坏的部件。

They returned to the space station at 4:49 pm. The mission's third astronaut, Colonel Wang Jie, stayed inside the space station and worked with ground controllers to provide assistance to the spacewalkers.

他们于下午4:49返回空间站。任务的第三名宇航员王杰大校留在空间站内，与地面控制人员合作，为宇航员提供协助。

The spacewalk was the 21st that Chinese astronauts have ever carried out, and marked the fourth time Chen Dong floated outside the Chinese space station. He previously took part in three spacewalks during the Shenzhou XIV mission.

此次太空出舱是中国宇航员进行的第21次出舱任务，也是陈冬第四次在空间站外进行太空出舱。此前，他曾在神舟十四号任务期间进行过三次太空出舱。

Thursday's spacewalk was the first for Chen Zhongrui.

周四的出舱任务是陈中瑞的首次太空出舱。

Chen Dong and his teammates have been aboard the station since their arrival on April 25.

陈冬和他的队友自4月25日抵达空间站以来，一直在空间站工作。

Before t