grit
[ɡrɪt]
n.
细沙，沙砾;
刚毅，坚韧;
勇气;
vt.
发出轧轧声;
轧，研磨;
以沙砾覆盖（某物），撒沙砾于;
咬紧牙关;
例句:
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The grit and rawness of the label shines through.
来自BBC
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I pretended to rub a fleck of grit from one eye.
我假装拭去一只眼睛里的沙粒。
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You'll never quite get rid of every last bit of grit.
无法把所有的沙砾都清除干净。
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He felt tiny bits of grit and sand peppering his knees.
他感到细小的沙砾不断打在膝盖上。
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You need enough salt to give the mixture some grit.
来自BBC
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The grit of sand was underfoot and on every surface.
来自NEWYORKER