Just as Mercury is locked facing the sun, the planet is tidally locked to its star, so that one side basks in perpetual daylight, while the other side remains in darkness.

与水星总有一半固定地面对太阳相似，该行星总是始终保持一面朝向恒星，使得星球的一半永久处于阳光之中，而另一半则永久位于黑暗。

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But gravity lessens with distance and this means that the pull from the Moon is stronger on the side of Earth that is facing the Moon.

但是，引力随距离增大而减小，这意味着月球施加在朝向自己那一面的地球部分的拉力要大些。

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One side of the planet is always facing the star, much as one side of the moon constantly faces Earth.

581g的一面是始终朝着恒星的，就像月亮有一面始终朝着地球一样。

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The new top section, with its side-facing audio port, is apparently a good chunk of what affects the sound in unison with those strategically placed vents.

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His photograph of the factory is a grainy blur: two lines of men at work, blacks and whites side-by-side and facing each other across the assembly line that runs up the middle of the picture.

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On the consumer-facing side, an even stronger stamp of approval came from Apple, who in 2010 declared that Able Planet had the best sounding headphones on the market.

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