knee

/ni/

hinge joint in the human leg connecting the tibia and fibula with the femur and protected in front by the patella

中文释义：膝盖；膝关节

He injured his knee while playing football and had to rest for weeks.

他踢足球时伤了膝盖，不得不休息数周。

The doctor advised her to do exercises to strengthen her knees.

医生建议她做运动来增强膝盖力量。