roughen是什么意思？

roughen

英[ˈrʌfn] 美[ˈrʌfən]

• vt.& vi. （使）变得粗糙，（使）变得不平；

第三人称单数：roughens;

过去式：roughened;

过去分词：roughened;

现在分词：roughening;

例句

• You'd better roughen the surface before applying the paint. 你最好先把表面弄毛糙再涂颜料.
• Roughen the surface before applying the paint. 先把表面弄毛糙再涂颜料.
• What has roughen'ed your temper? 可什么东西惹恼了你了?

柯林斯高阶英汉双解学习词典释义

• VERB
  （使）变得粗糙;（使）变得不平滑
  If something has been roughened, its surface has become less smooth.
  例句
  ...complexions that have been roughened by long periods in the hot sun... 因长期曝晒而变得粗糙的皮肤 She lifted her big, roughened hands. 她举起了那双粗糙的大手。

英汉词典释义

• vt. & vi.
  (使)变得粗糙;(使)变得不平
  Her hands were roughened by work. 她的手由于干活而粗糙。

英英词典释义

• Verb
  1. make rough or rougher;
  "rough the surfaces so they will stick to each other"