n.膝( knee的名词复数 );膝盖;(裤子的)膝部;坐下时)大腿朝上的面;
例句:
She planted her feet wide and bent her knees slightly.
她双脚宽分站稳,膝盖微屈。
She got down on her hands and knees on the floor.
她双手撑地跪在地上。
He had stumbled down and torn the skin from his knees.
他绊倒在地,膝盖上蹭破了皮。