psych ops      
noun [ plural or U ]  informal uk/ˈsaɪk ɒps/ us/ˈsaɪk ɑːps/ (also psy ops, uk/ˈsaɪ.ɒps/ us/-ɑːps/)
 心理战
military activities that involve trying to influence the enemy's beliefs and state of mind
 
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