| 单词 | black helicopter | 
| 释义 | Definition of black helicopter in English:black helicopternoun US 
 adjective US 
 Origin1970s; earliest use found in Havre (Montana) Daily News. Definition of black helicopter in US English:black helicopternoun US 
 adjective US 
 Origin1970s; earliest use found in Havre (Montana) Daily News.  | 
	
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