以沙砾覆盖(某物),撒沙砾于( grit的现在分词 );咬紧牙关;
Gritting my teeth, I did my best to stifle one or two remarks.
我咬紧牙关,硬是吞回了几句话。
Gritting his teeth, he broke into a run inspite of the depth of the water.
他咬上了牙, 郯着水不管高低深浅的跑起来.
It takes gritting your teeth . It takes discipline.
你得咬紧牙关, 你得有严格的纪律.
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