drasticadj.激烈的；重大的；极端的drastic extraction深度抽提drastic purgatives峻泻剂drastically modify大幅度修改drastic medications峻猛剂drastic fluctuations剧烈波动; 大起大落drastic deasphalting深度脱沥青drastic plant cathartic植物性峻泻药drastic counter measures严厉的对抗措施drastic diuretics formula逐水剂drastic measures/changes严厉的措施；剧烈的变化