是fall的過去式。

v. 落下；跌倒；下垂；跪下；（地面）向下傾斜；（數量等的）減少； （雨或雪） 降落；淪陷； 陣亡；進入（某狀態）；突然來到

n. 落下；跌倒；（雪、巖石等的）降落；（數量等的）減少；秋季；垮臺、衰敗
Spots of rain had begun to fall.

雨點已經開始落下來了。

Aren't you afraid (that) you'll fall?

你不怕會跌倒嗎？

Output will fall by 6%.

產量將下降6%。

He was terrified (that) he would fall.

他很害怕會跌倒。

She broke her right leg in a bad fall.

她在一次嚴重的跌倒中右腿骨折了。