fall off 1. (从…)掉下，(从…)跌落 2. 减少；缩减；降低 Enrolment has fallen off this year. 今年入学人数减少了。 Business fell off after Christmas. 圣诞节后生意变得清淡。 3. (健康等)衰退；减弱，较前逊色 4. 疏远，离开；脱离 His friends fell off one by one. 他的朋友一个一个地跟他疏远了。 fall off from a political party 脱离一个政党 5. (船)偏向下风；改变航向，偏离航线 6. (海岸线)(朝某一方向)曲弯