grits

I've got some grit in my shoe.

我的鞋子里弄进了一些砂子。

Parliament must grit its teeth and take action.

议会必须痛决心，采取行动。

Mountaineering in a blizzard needs a lot of grit.

在暴风雪中登山需要极大的勇气和毅力。

The grit beneath her soles grated harshly on the wooden deck.

粘在她鞋底的沙砾蹭在木甲出刺耳的声音。

400 grit paper.

细度为400的砂纸。

When I was a boy, I was forced to have a cold shower every morning. I hated it but I just had to grit my teeth and do it.

小时候，我被迫每天早洗冷水澡，我很不情愿但仍然咬紧牙关坚持了来。