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They set up three bases before climbing to the top.
在登顶之前他们建了三个基地。
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Jiuquan space Center is the first constructed among the three Chinese space bases.
酒泉航天中心是中国三个航天基地中最早建设的。
youdao
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Jiuquan space Center is the first constructed among the three Chinese space bases.
酒泉航天中心是中国三个航天基地中最早建设的。
youdao