The tree is so badly damaged they are worried it might topple over.

这棵树损伤非常严重以至于他们担心它会倒下。

The house threatened to topple over on them.

房子有倒塌压着他们的危险。

So, why don’t they topple over at the first tremor?

那么，为什么它们在首次抖动时不倒塌？

So, why don't they topple over at the first tremor?

那么，为什么它们在首次抖动时不倒塌？

A centipede does not topple over even when dead.

蜈蚣即使死了也不会倒下。