痛觉神经 meaning in Chinese

pain nerve

Anesthesia is used during operations and other medical procedures to block pain signals from traveling through the nervous system
麻醉在手术和其他医疗过程中，用来阻止人感知神经系统中的痛觉神经。
The danger to vision of inadequately protected viewing of the sun is significant because light - induced retinal injuries occur without any feeling of pain ( there are no pain receptors in the retina ) , and the visual effects do not occur for at least several hours after the damage is done
在不适当的保护下观测太阳是极度危险的,因为光照造成的视网膜损伤是不会产生痛楚的(视网膜上没有痛觉神经) ,以及视网膜会在受损后最少数小时后才会出现徵状