而这则是由潮汐造成。
Since the Moon always presents the same face to Earth as the result of "tidal locking", direct communication links with devices on the lunar surface can be maintained continuously.
由于“潮汐锁定”的作用，月球总是以同一个侧面对着地球，这样，设立在月球表面的通信设施就可以与地球保持不间断的直接联系。
Since the Moon always presents the same face to Earth as the result of "tidal locking", direct communication links with devices on the lunar surface can be maintained continuously.
由于“潮汐锁定”的作用，月球总是以同一个侧面对着地球，这样，设立在月球表面的通信设施就可以与地球保持不间断的直接联系。
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