knee是什么意思

例句：

She gave her knee a quick rub.

她很快地揉了揉膝盖。

It hurts when I bend my knee.

我的'膝盖一弯就疼。

The water was only knee-deep.

水只有齐膝深。

I fell over and cut my knee.

我摔倒了，划破了膝盖。

Is your knee still painful?

你的膝盖还疼吗？

I had only bruised my knee.

我只是膝盖受了瘀伤。