[机] 磨损, 侵蚀

v worry unnecessarily or excessively

v be agitated or irritated

v provide (a musical instrument) with frets

v become or make sore by or as if by rubbing

v cause annoyance in

v gnaw into; make resentful or angry

v carve a pattern into

v decorate with an interlaced design

v be too tight; rub or press

v cause friction

v remove soil or rock

v wear away or erode