Complex fractures, though-those that involve bones shattered into fragments-are more challenging.

可使若骨折的骨片错综复杂则很难矫正。

youdao

Getting plentiful alkaline minerals from the water you drink is one of the easiest ways to get those minerals into your system, and maintain healthy bones!

越来越丰富的碱性矿物质，喝的水是最容易的办法，让这些矿物进入你的系统，并维持骨骼健康！

youdao

It involves putting a needle, a fairly large needle into usually one of the pelvic bones and collecting marrow from which is tissue that's deep inside those bones.

先要用针头,相当大的针头刺进你的盆骨,然后进行收集,这些在骨头深处的骨髓

耶鲁公开课 - 生物医学工程探索课程节选