它叫做大腿骨，范围从臀部到膝盖。

It is called the femur and it goes from your hip to your knee.

youdao

你是否意识到，你每走一步，你臀部的骨头就会承受你体重4到5倍的力量？

Do you realize that every time you take a step, the bones in your hip are subjected to forces between four and five times your body weight?

youdao

你是否意识到，你每走一步，你臀部的骨头就会承受你体重4到5倍的力量？

Do you realize that every time you take a step, the bones in your hip are subjected to forces between four and five times your body weight?

youdao