“止痛剂”的英语？

药剂师建议配一种止痛剂.The druggist suggested a preparation to relieve the ache.这种乳膏含有一种性能平和的止痛剂,能缓解被螫咬后的疼痛.This cream contains a mild analgesic to soothe stings and bites.这个病患自控式止痛机器可以自动给予你止痛剂.This PCA machine will automatically g...