brush up 1. 在…上刷漆；刷干净；使整洁 The house needs to be brushed up. 这屋子需要油漆一下。 wash and brush oneself up 梳洗整装 2. 重温，再练(荒疏的学业、技术)；通过学习(或练习)提高 I must brush up my French before going to Paris. 我去巴黎前一定要把法语复习一下。 They come here to brush up on technology. 他们来此以求提高技术。 3. 改进，改善