| 释义 |
sharpen upphr.① 磨利sharpen up🄰vt. sep.to sharpen up sthorto sharpen sth up使改进The fashion designers have sharpened up their act in the last few years.时装设计师在过去的几年间表现得更出色了。🄱vi.更敏锐；改进If he really wants to sell his product, he'll have to get his marketing boy |