| 单词 | back forty | 
| 释义 | Definition of back forty in English:back fortynoun ˌbak ˈfɔːti Canadian, United States Regional, North 
 Origin1930s; earliest use found in American Home. From back + forty. Also written with numerical symbol for the second element. Definition of back forty in US English:back fortynounˌbak ˈfɔːti Canadian, United States Regional, North 
 Origin1930s; earliest use found in American Home. From back + forty. Also written with numerical symbol for the second element.  | 
	
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