fall-off

名词 fall-off:

1. a noticeable deterioration in performance or quality
   同义词：slump, slack, drop-off, falloff, falling off

动词 fall-off:

1. come off
   同义词：fall off
2. fall heavily or suddenly; decline markedly
   同义词：slump, fall off, sink
3. diminish in size or intensity
   同义词：fall off, fall away