This change in direction is known as retrograde motion.

这种方向的变化就是逆行。

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Make the most of Mercury's last day in retrograde motion to take a trip down memory lane.

利用水星逆行的最后一天时间沿着记忆的路径做旅行吧。

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Now that its retrograde motion has ended, Jupiter will seem to slip closer to the setting sun each evening.

现如今逆行已经结束，每到夜晚，木星看起来更靠近落日。

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