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。

《柯林斯英汉双解大词典》

The house threatened to topple over on them.

房子有倒塌压着他们的危险。

youdao

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？

youdao

Then British Prime Minister Tony Blair sent over 45,000 troops to Iraq in 2003 to help topple Saddam Hussein.

VOA: standard.2009.11.25

There have been conflicting reports about what happened to the men after the kidnapping, but it is widely believed that the men were handed over to Islamist militants fighting to topple the Somali government.

VOA: standard.2009.08.26

Yesterday it looked as though Italy was about to topple over the debt precipice.

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For much of last year, it was feared that Ford, in particular, would topple over into Chapter 11 bankruptcy.

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The downside, of course, is when you get so many they start to accumulate in large stacks that topple over if you so much as look at them wrong.

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