Did you ever break a bone?

你曾经摔断过骨头吗？

Give Spot a hug and a bone for me.

替我给斯波特一个拥抱和一根骨头。

New inventions like 3D printers have been used to make replacement hearts and bone parts.

新发明如3D打印机已被用来制造替代的心脏和骨骼部件。

The osteon is the fundamental unit of compact bone.

骨单位是致密骨的基本单位。

The osteoclast plays a crucial role in bone resorption.

破骨细胞在骨吸收中起着至关重要的作用。