1、

Russia has been celebrating the50th anniversary of the first human space flight when the Soviet cosmonaut Yuri Gagarin completed a single orbit of Earth.

俄罗斯将庆祝人类首航太空50周年,苏维埃宇航员尤里加加林完成第一次太空飞行任务。

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2、

The problems of CDAS for C satellite were solved and adaptability adjustment was completed during the periods of on-orbit test and experimental operation.

在轨测试和试运行期间,C星的CDAS不仅解决暴露的问题,而且进行适应性调整。

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3、

When it has completed its mission, it will decouple from the Tiangong space station, descend from orbit and burn up in the atmosphere.

完成任务后,天舟一号将与天宫空间站分离,从轨道下降,在大气层中焚毁。

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