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。