前后嘟有，前面多些 because：
所有跟贴·加跟贴·新语丝读书论坛
送交者: cornbug 于 2014-07-07, 21:38:30:
回答: 傻瓜！后面是你的脊髓。当然不能从后面下手。 由 alabama123 于 2014-07-07, 21:14:49:
1. There is no muscle in front then there is no pain postoperatively.
2. All nerves are on the back of vertebrae that will not be touched.
所有跟贴:
加跟贴