If you have to take drastic action in order to solve a problem, you have to do something extreme to solve it.
Drastic measures are needed to clean up the profession.
需要采取极端的措施来整顿这个行业。
He's not going to do anything drastic about economic policy.
他不会对经济政策作任何重大改变。
A drastic change is a very great change.
Foreign food aid has led to a drastic reduction in the numbers of people dying of starvation.
外国的食品援助使得因饥饿而死亡的人数大幅下降。