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It's an opening step for China's plan to assemble a space station.
此次行走为中国计划装配空间基站迈出了第一步。
youdao
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A plan of setting up crossing signal at station throat is put forward.
提出一种在车站咽喉区道口设置道口信号的方案。
youdao
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A plan of setting up crossing signal at station throat is put forward.
提出一种在车站咽喉区道口设置道口信号的方案。
youdao