black economy
柯林斯词典
1. N that portion of the income of a nation that remains illegally undeclared either as a result of payment in kind or as a means of tax avoidance 黑色经济; 国家收入中所存在的非法未申报的那部分逃税收入
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1. N that portion of the income of a nation that remains illegally undeclared either as a result of payment in kind or as a means of tax avoidance 黑色经济; 国家收入中所存在的非法未申报的那部分逃税收入