擦破

The boy fell and scraped the skin off his knee.

这男孩跤, 膝盖上的皮。

I barked my shin on a tree stump.

我磕到树桩上，胫部皮。

He boohooed when he skinned his knee.

当他的膝盖时, 他大声哭起来。

Jack skinned his knee when he fell.

杰克跌倒时膝盖皮。

The bullet merely creased his shoulder.

子弹只不过他肩部的皮肤。

He skinned his knees when fell.

他倒时膝部的皮肤。