Noun:

1. an exorbitant charge

2. unjust exaction (as by the misuse of authority);

   "the extortion by dishonest officials of fees for performing their sworn duty"
   

3. the felonious act of extorting money (as by threats of violence)

exactionn.勒索；苛求

coercionn.强迫；威压；高压政治

pressuren.压强；压力；压迫v.施压

blackmailn.勒索；敲诈vt.勒索；讹诈

forcen.武力；暴力；力量；影响力；力量大的人或（事物）；权力；（为某目的组织起来的）一群人；军队；部队；武装力量；警察部门；力；风力v.迫使；强迫；强制；使发生；强装（欢笑）；人工催长

shakedownn.<俚>勒索；彻底搜查；评估阶段；地铺；狂舞

1. The crooks shook down the shopkeepers for extortion money.
   流氓向店主们索取保护费。
2. He faces trial on extortion charges.
   他将因被指控敲诈而受审。
3. He pleaded guilty to conspiracy to commit extortion.
   他供认了犯有合谋敲诈罪。
4. She did fifteen years for extortion and bank robbery.
   她因犯勒索罪和抢劫银行罪，服了15年的刑。
5. Many gangs collected protection in the form of extortion.
   许多黑帮以勒索的形式收取保护费。