China already has three space centres: Taiyuan in the north, Xichang in the south-west and Jiuquan in the north-west.
中国目前已有三个航天中心，分别是北方的太原，西南的西昌，西北的酒泉。
Two astronauts aboard Endeavour are set to conduct three space walks that will largely be devoted to installing Tranquility.
奋进号上的两名宇航员将进行三次太空漫步，其中大部分是为了安装宁静号。
Two astronauts aboard Endeavour are set to conduct three space walks that will largely be devoted to installing Tranquility.
奋进号上的两名宇航员将进行三次太空漫步，其中大部分是为了安装宁静号。
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