Avoid sudden changes of the trajectory path underwater.

避免水下运动轨迹的突然改变。

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From then on it must coast in a trajectory, or flight path, to its target.

从那时起，它就得沿着弹道，即沿着飞行航线滑向其目标。

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From then on it must coast in a trajectory, or flight path, to its target.

从那时起，它就得沿着弹道，即沿着飞行航线滑向其目标。

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