grinds
v.
磨碎，嚼碎( grind的第三人称单数 );
旋转开动;
压迫，折磨;
例句:
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Sprinkle with salt and a few grinds of pepper.
来自BBC
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All night she grinds her teeth together , keeping me awake.
她整夜咬牙, 吵得我睡不着觉.
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Mother usually grinds down the food for the baby.
母亲一般要把食物嚼碎再喂给婴儿.
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She grinds out romantic stories for the women's magazines.
她为妇女杂志写爱情小说.
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This grinds life's grist, yet takes small tole.
来自fig.
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Now add the mustard and several grinds of black pepper.
来自BBC