falling off

n. 减退, 下降, 衰退

例句与用法：

Export trade is falling off.

出口贸易减少了。

Export trade was falling off.

出口贸易减少了。

He was covered in bruises after falling off his bicycle.

他从自行车上跌下来，满身青一块、紫一块。

I have nightmares about falling off a cliff.

我常做恶梦梦见从悬崖上摔下来。