防微杜渐的英文：
[Literal Meaning]
prevent/small/stop/outset
to prevent what seems to be the beginning of an unwholesome trend

[解释]
在坏事情、坏思想开始出现的时候就加以制止，不让它发展。

[Explanation]
to check erroneous ideas at the outset

[例子]
对于目前出现的物价上涨的情况，我们应该防微杜渐，尽早采取措施。

[Example]
As for the recent rise of price of consumer products, we should prevent and take measures as early as possible.

We should check erroneous ideas at the outset to nip an evil in the bud.
我们应该防微杜渐，把祸害消灭在萌芽之中。