dirty tricks

dirty-tricks的词性：
pl.n.Informal （复数名词）【非正式用语】

1. Covert intelligence operations designed to disrupt the economy or upset the political situation in another country.
间谍工作：秘密的情报行动，旨在干扰另一国的经济或造成其政治混乱

2. Unethical behavior in politics, especially acts undertaken to destroy the credibility or reputation of an opponent.
政客伎俩：政治中不道德的行为，尤指从事损害对手的信用度或名誉的行为

3. Commercial espionage.
商业间谍活动

dirty-tricks的词性：
n.（名词）