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fall off
フォール・オフ
落ちる, 低下する, やせる
Phrasal Verb: fall off
1. To become less; decrease: eg. Stock prices have fallen off. The number of staff meetings fell off after a few months.
2. To lose weight: eg. Toward the end of the dry season, the cattle fall off rapidly.
3. [船用語]To change course to leeward.