grind/ɡraɪnd/
vt., vi.ground, grinding1. 磨碎to grind wheat in a mill用磨面机磨麦子
2. 磨牙齿,咬牙3. 磨光;磨快;磨尖锐to grind the knives and scissors磨刀和剪子
4. (与down连用)压榨;折磨;压制5. 旋转;挤压He ground his knee into the man's stomach.他用膝盖挤压那人的肚子。
6. (常与away连用)艰苦地做7. (与out连用)机械地做出