Definition: to move down towards the ground, sometimes by accident Level: A2
这条路很陡，所以小心别摔倒。
The path's very steep, so be careful you don't ___fall.
他摔得很重，腿断了。
He ___fell badly and broke his leg.
到冬天时，所有叶子都从树上掉落了。
By winter, all the leaves had ___fallen off the trees.
