Broken drill bit, sometime does happen.
所有跟贴·加跟贴·新语丝读书论坛
送交者: asimpleday 于 2014-03-24, 18:57:07:
回答: 可能是断在里面的。确实没有危害，还加固了骨头。缓释铁补血。 由 老僧 于 2014-03-24, 10:13:40:
As long as it is in bone and not involving the joint. It is okay if not able to taken out.
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加跟贴