| 单词 | roughen |
|---|---|
| 音标 | ['rʌfən] |
| 解释 | v.变得粗糙，变得不平 |
| 红宝书 | 【英】 v. 变得粗糙，变得不平( make or become rough) 【记】 rough（粗糙的）+en |
| 字源 | roughen (v.) 1580s, from rough (adj.) + -en (1). Related: Roughened; roughening. |
| 不择手段背单词 | 无 |
| 趣味全助记 | 【记】rough + en 使 |
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