If you have to take drastic action in order to solve a problem, you have to do something extreme and basic to solve it.
例句
Drastic measures are needed to clean up the profession...行業清理整頓需要嚴厲的措施。He's not going to do anything drastic about economic policy.他不打算對經濟政策作任何重大調整。
ADJ-GRADED
（變化）激烈的，巨大的
A drastic change is a very great change.
例句
Elderly people are not in a position to make drastic changes at this stage of their life...上了年紀的人在他們這個人生階段不會再有什么實質性的改變。...a drastic reduction in the numbers of people dying.死亡人數的大幅下降
英漢詞典釋義
adv.
大大地;徹底地
Next year’s budget will have to be drastically pruned.下一年度的預算將大幅度削減。Social work services have been cut back drastically.社會工作服務已經大大減少了。We have managed to cut our costs quite drastically.我們已設法使成本大大地降低了。The strike,couple with the flood,was expected to reduce supplies of food drastically.罷工加洪水,預計會大量減少食品供應。Within a year the party had drastically overhauled its structure.一年內這個政黨已大刀闊斧地整頓了結構。