Xu Xian prepared some medicine and went to check on her.

许仙准备了药材， 去查看她的情况。

Environmental factors can never be totally eliminated;as Hayward points out, " We can't prepare a medicine against cosmic rays." The prospects for cure, though still distant, are brighter.

环境因素永远无法完全消除； 正如海沃德指出的那样，“我们无法制备出对抗宇宙射线的药物。 ” 治愈的前景虽然还很遥远， 但却更加光明。