A thorough brushing helps to freshen up your mouth. [VERB PREP. noun]

一番彻底的刷牙处理有助你清洁口腔。

My room needed a coat of paint to freshen it up. [VERB noun PREP.]

我的房间需要一层粉刷来焕然一新。

After Martine had freshened up, they went for a long walk. [VERB PREP.]

马丁尼梳洗干净过后，他们出去散了个长步。