amyotrophia Chinese肌萎缩 amyotrophic lateral sclerosis Chinese肌萎缩性侧束硬化症 anaerobic Chinese厌氧的 anal reflex Chinese肛门反射 analgesia Chinese痛觉缺失 anencephalyChinese 无脑 anesthesia dolorosa Chinese痛性感觉缺失 anesthesia Chinese感觉缺失