1、knee英[niː]美[niː]，n.膝; 膝盖; 膝关节; (裤子的)膝部; (坐下时)大腿朝上的面;vt.用膝盖顶(或撞)。

2、[例句]He went down on one knee and asked her to marry him.他单膝跪下向她求婚。