polish sth ↔ up 1. also polish up on sth to improve a skill or an ability by practising it提高〔技能〕:•You should polish up your Spanish before you go to Chile.去智利以前你应该提高一下西班牙语。2. to make something seem better or more attractive to other people改善〔外表等〕:•The company needs to polish up its image.那家公司需要改善一下自己的形象。3. to polish something擦亮，擦光 |