If you do not end your move on a horizontal surface, you fall prone, taking falling damage as appropriate for your distance above the ground.

如果你的移动最终不能停止在水平表面上，你将摔下去并且承受正常强况下由于跌落而造成的伤害。

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Other culprits include the application of fertilizer in the fall, when the ground is bare, and the spreading of manure on the surface, instead of into the soil.

WSJ: Report predicts ever-bigger Lake Erie algae blooms