fall down

/fɔl ˈdaʊn/ 动词

中文：落下、倒下

To fall to the ground. To collapse. (intransitive) · Ring a-ring o' roses, / A pocketful of posies. / A-tishoo! A-tishoo! / We all fall down. — traditional nursery rhyme (British version)· The beams supporting the roof had rotted, causing the entire house to fall down.
To sail or drift toward the mouth of a river or other outlet.
To fail; to make a mistake. (figuratively, intransitive) · That is where your reasoning falls down.

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“Because,” answered the Princess, also stopping, a safe distance away, “if I run I may fall down and break myself.”

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