fall off
US /fɔːl ɔːf/
UK /fɔːl ɔːf/

1.
下降, 減少
to decrease in quantity or quality; to decline
:
•
Sales tend to fall off during the winter months.
冬季銷量往往會下降。
•
His performance has started to fall off recently.
他最近的表現開始下滑。
下降, 減少
to decrease in quantity or quality; to decline