用法:
1 having a strong or violent effect 激烈的; 猛烈的; 烈性的:
Drastic measures will have to be taken to restore order. 为恢复秩序必须采取严厉措施.

用法:
2 very serious 极严重的:
a drastic shortage of food 食物的严重匮乏.

• upturned
• upward
• upward (also upwards / -wEdz; -wLdz/)
• upward mobility
• upwards of
• upwind
• uranium
• urban
• urbane
• urbanely
• urbanity
• urbanization, urbanisation
• urbanize, urbanise
• urchin
• Urdu
• -ure
• urea
• ureter
• urethra
• urge 1
• urgency
• urgent
• urgently
• uric
• urinal