black economy
参考词典中black economy的常规释义：
基本释义
- n. 黑色经济，非法经济
英英解释
1个名词解释
- a hidden sector of the economy where private cash transactions go unreported
[例]- no one knows how large the black economy really is
点击查看……- a hidden sector of the economy where private cash transactions go unreported
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