polish up   (TTS發音)

1. become bright and clean with polishing擦亮

    He polished up the silverware till it shone. 他把銀器擦得錚亮。

2. improve改善；潤色

    I'll have to polish up my French before the holidays. 度假前我得溫習一下法語。

    I think this article needs polishing up before we print it. 我認為這篇文章還需潤色一下才能復印。