You see how this epicycle theory could account for the seemingly backward motion of the planet.

你可以看到这个本轮理论是如何解释行星看起来像在做反向运动的。

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All movements must begin with a backward motion with a very few exceptions.

除了某特别情况之外，所有动作应以一个向后的反作用力作开始。

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A rowing or paddling stroke in which the oar or paddle is pushed forward, used to check a boat's forward motion or move it backward.

倒浆，把橹或桨向前推以阻止船向前运动或向后移动的一种划船或摇桨方式。

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The dedicated block button common to earlier Mortal Kombat games has been discarded, replaced by automatic blocking in high or low lines with a backward motion of the joystick.

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