vigilante 治安维持会
A person or group who takes the responsibility of a law enforcement officer into their won hands.
承担执法人员维持治安责任的个人和群体。
例句：
The subway vigilante in New York was in the media for weeks.
纽约地铁治安维持会几周来受到了媒体的关注。

tax evasion¹ 逃税
The illegal attempt by a taxpayer² to avoid paying his or her taxes.
纳税人企图逃避纳税的非法行为。
例句：
Bill was found guilty of tax evasion and owes the IRS over $60,000 in back taxes.
比尔被判逃税罪，他现在仍欠国内收入局六万多美元的滞纳税金。

white-collar crime 白领犯罪
Crimes committed by persons in businesses including expense-account padding, stealing office supplies, price-fixing, product fraud, etc.
公司职员的犯罪，包括虚报开支、偷盗办公用品、私定价格、产品欺诈等。
例句：
Businesses are losing millions of dollars, and products are more expensive due to white-collar crime.
由于白领犯罪，企业界每年损失数百万美元，产品也因之更贵。

vandalism 故意毁坏
The defacement or destruction of public or private property.
损坏或破坏公私财产的行为。
例句：
Vandalism is a major problem in inner city schools.
故意毁坏财物的行为是市内学校的一个严重问题。

vice³ squad⁴ 警察缉捕队
Plain clothes policeman who work undercover to detect crime.
隐蔽调查犯罪的便衣警察。
例句：
Sean has been a member of the vice squad for nine years.
西恩在缉捕队工作已经9年了。

war crime 战争犯罪
Crimes that violate the customs and laws of war.
违犯战争法律和战争习惯的犯罪。
例句：
The retired⁵ officer was found guilty of war crimes when evidence was uncovered during a recent investigation⁶.
在最近的一次调查中发现的证据证明这位退休军官曾有战争犯罪。