详细解释:【医】 脊髓麻醉, 脊椎麻醉, 脊髓性感觉缺失
英语解释：
名词 spinal anesthesia:
anesthesia of the lower half of the body; caused by injury to the spinal cord or by injecting an anesthetic beneath the arachnoid membrane that surrounds the spinal cord同义词：spinal anaesthesia, spinal