后患

gēn chú hòu huàn

根除后患

dig up the root of future trouble

yǐ miǎn hòu huàn

以免后患

avert future trouble

dǎo zhì hòu huàn

导致后患

cause trouble in future

zhè jiāng huì hòu huàn wú qióng

这将会后患无穷。

It will be no end of future trouble.

cóng cháng yuǎn kàn zhè xiē wèn tí bù jiě jué hòu huàn wú qióng

从长远看，这些问题不解决，后患无穷。

In the long run, if these problems are not solved, future trouble will be endless.