vi.
受痛苦，感到痛苦(或苦恼)，受苦难；感到疼痛；患病：
He is suffering from the loss of his old friend.
他正遭受失去老朋友的痛苦。
He is still suffering after medicine.
吃过药后，他依然感到很难受。
受损失，受害：
You'll suffer from smoking too much.
吸烟过多你的健康会受到损害。
to suffer from floods
遭受水灾
变差，变糟：
One's sight su