更多roughen例句

1. The rubber used should not be of a harsh grade, since that will roughen the face of the paper and probably cause the ink to run.
2. Take a piece of sand-paper and roughen the edges of the break as far around as the size of the patch.
3. The path, to be sure, does not roughen until one has gone along it for twenty-eight hundred miles.
4. Heading weatherward, he gave more heed to the wheel, for there were signs that the water was going to roughen somewhat.
5. No amount of the hardest known abrasive will even roughen its surface.