及物动词
1. Her hands were roughened by work.
她的手由于干活而粗糙。
不及物动词
1. The surface roughens.
表面变粗糙了。
1. 变粗糙：rough 大浪 | roughen 变粗糙 | roughfile 粗齿锉
2. 使变粗糙：rough 粗糙的 | roughen 使变粗糙 | southern 南部的
3. 粗糙：Pucker bloat 内陷膨胀 | Roughen 粗糙 | Scribble tweak 涂抹扭曲
4. 六、粗糙化工具：五、螺旋工具Spiral | 六、粗糙化工具Roughen | 七、取色工具Eyedropper
1. （使）变得粗糙;（使）变得不平滑
If something has been roughened, its surface has become less smooth.
e.g. ...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
e.g. She lifted her big, roughened hands.
她举起了那双粗糙的大手。
roughen的近义词
verb
1. roughen
1. make rough or rougher
e.g. roughen the surfaces so they will stick to each other