The trace of mercy, not just think the phantompain?
那一丝丝的怜悯，不正是思痛的幽灵？
2
One such condition is phantompain that persists in the mouth after a tooth has been removed.
幻痛就是这样一种牙病，在患者拔牙后一个月内一直挥之不去。
3
To their delight, they discovered that memantine not only reduced changes in the brain, it also decreased both the incidence and the intensity of phantompain.