It has to be. We've probably all had fractures at some point or other. And one of the ways that you can think about repairing your fracture is this procedure here, called an iliac crest harvest.
它必须得是这样的。 我们可能都有过骨折的经历吧。 而要想修复骨折， 一个方法 就叫髂骨移植法。