| 词汇 | roughen |
| 释义 | roughen 1 ENTRIES FOUND: roughen (verb) roughen /ˈrʌfən/ verb roughens; roughened; roughening roughen /ˈrʌfən/ verb roughens; roughened; roughening Learner's definition of ROUGHEN : to become rough or cause (something) to become rough使变粗糙（或不平整） [+ object] Roughen the surface with a file before you apply the glue.先用锉刀把表面弄毛糙，再涂上胶水。 Her hands were roughened by years of hard work.经年劳作使她的双手变得粗糙。 [no object] Age caused his skin to roughen.岁月使他的皮肤变得粗糙了。 |
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