| 单词 | roughen |
| 释义 | roughen['rʌfən]vt.1.■使粗糙；使不平滑：Her hands were roughened by housework.她的手由于家务劳动而变得粗糙。You'd better roughen the surface before applying the paint.你最好先把表面弄毛糙再涂颜料。vi.1.■变粗糙；变得不平：As time went on,the surface of the highway roughened.随着时间的推移，公路的路面变得崎岖不平了。 |
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