4月2日,我们告别了天宫一号——中国的第一个空间实验室。
On April 2, we said goodbye to Tiangong I, China's first space lab.
大约在同一时间,美国有了自己的空间站,叫做天空实验室号。
At about the same time, the United States had its own space station, called Skylab.
天宫一号,中国首个太空实验室,在今年4月2日完成任务后返回地球。
Tiangong Ⅰ, China's first space lab, returned to the earth after finishing its job on April 2 this year.
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