所以，用鼹鼠丘造山，其实就是把小事说成大事，言过其实了。

So - making a mountain out of a molehill means making a small problem seem like a big one.

youdao

鼹鼠在草坪下挖洞，隆起的鼹鼠丘会破坏草坪，因此它们经常被看作是有害动物。

Moles burrow in lawns, raising molehills and killing the lawn, for which they are sometimes considered pests.

youdao

最新的版本甚至还能利用太阳能充电； 要是割草时，它在卡在鼹鼠丘上不能动了，它还能给主人发短信求救。

The latest version can even top up its batteries with solar power, or send its owner a text message if it gets into trouble trying to climb a mole-hill.

youdao