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China's first manned space flight successfully circled the earth 14 times during its 21-hour trip.
中国首次载人航天飞机在21小时的飞行中成功地绕地球14圈。
youdao
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China's first manned space flight successfully circled the earth 14 times during its 21-hour trip.
中国首次载人航天飞机在21小时的飞行中成功地绕地球14圈。
youdao