n.细沙,沙砾,<口>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
I pretended to rub a fleck of grit from one eye.
我假装拭去一只眼睛里的沙粒。
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。
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。