刷漆,梳妆
He brushed up on fractions before taking the arithmetic test. 在参加算术考试前他又重温了分数。
She thought of brushing up her shorthand. 她想到要复习一下过去学过的速记术。
My German has got rusty, I must brush it up. 我的德文已生疏，我要复习一下。
