To bathe a rabbit in Engpsh, you can say "give the rabbit a bath". The phrase "give a bath" is commonly used to describe the act of washing or cleaning something, so it can be appped to washing a rabbit as well.

Here are some example sentences:

I need to give my rabbit a bath because she's starting to smell.
My rabbit loves getting a bath and always looks so fluffy afterwards.
I'm not sure how to give a rabbit a bath, can you show me?

In Chinese, you can say "给兔子洗澡" to describe this action. The Chinese phrase directly translates to "give the rabbit a bath".