207.assassin ： 暗杀
a murderer. a person who sets out to kill someone, esp. a prominent person.
谋杀者。密谋杀害他人，特别是一位杰出人物的凶手。
police are still looking for the assassin of the president candidate.
警方仍在追查暗杀总统候选人的凶手。
208.assault ： 袭击
the act of attempting or threatening to harm another person.
试图伤害或威胁要伤害他人的行为。
mr. green was assaulted while he was walking on 25 th street.
格林先生在第25 大街行走的时候受到袭击。
209.attack dog ： 攻击犬
a canine dog that has been trained to attack burglars, etc.
一种经过训练的狼犬，用来攻击窃贼等。
the officer’s attack dog has saved his life many times.
这位警察的攻击犬多次救了主人的命。
210.back-alley butcher ： 卑鄙的屠夫
slang for abortionist.
俚语，给人施行流产手术的人。
demonstrators picked an abortion clinic with signs that said “back-alley” butcher.
示威者将一家流产诊所用标语牌围起来，牌子上写着”卑鄙的屠夫”。
211.bail ： 保释金
money that is deposited with a court in order to secure the release of a defendant while awaiting trial.
存放在法庭的一定数量的保证金，以使被告在候审期间获得释放。
frank’s wife came down to the police station to bail him out.
弗兰克的妻子到警察局将他保释出来。
212.ballistics ： 弹道学
the science of firearms and the study of the motion of bullets.
研究火器及子弹运动的科学。
a ballistics expert was taking evidence at the scene of the crime.
一位弹道学家正在犯罪现场提取证据。
213.blackmail ： 敲诈，勒索
the act of threatening to reveal personal information, esp. sexual scandals, in order to extract money.
以揭露隐私特别是性丑闻为威胁手段以谋取钱财的行为。
linda was involved in a blackmail scandal of the mayor.
林达涉嫌敲诈市长的丑闻。
214.black market ： 黑市
a market place where illegal or hard-to-get items are sold or where money is illegal exchanged.
非法或紧俏物资的销售点，或者非法换汇的地方。
gangs are buying assault weapons on the black market.
黑帮总在黑市购买攻击性武器。
215.blood money ： 血腥钱
money that is paid as retribution for injury, loss of life, vandalism, etc.
为他人受伤、丧命、损坏财产而付出的酬金。
the mafia paid blood money to have that man killed.
黑手党拿出血腥钱将那人杀了。