你最好找医生治治你的咳嗽。

You'd better see a doctor about that cough.

他让我当众出丑，我非治治他不可。

I'll pay him back for making me look like a fool in front of everyone.

你最好嚼几颗咳嗽糖，来治治你的感冒。

It would be better for you to chew a few cough drops to get rid of that cold you have.