一块松动的石板瓦从房顶上掉了下来。

A loose slate had fallen from the roof.

《牛津词典》

我当时正梳头，头发就一簇簇地掉了下来。

I was combing my hair and it was just falling out in clumps.

《柯林斯英汉双解大词典》

蜘蛛半路从墙上掉了下来，但它继续爬，又掉了下来。

The spider fell off the wall halfway, but it kept climbing again and fell off again.

youdao

instead of a stone dropping, nowadays there's a monkey that's falling down.

现在就不是丢石头了,而是有只猴子掉下来了

耶鲁公开课 - 基础物理课程节选