One answer is the black economy, say economists.
经济学家认为，答案之一就是黑色经济。
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No one knows how large the black economy really is.
没有人知道黑色经济到底大到什么程度。
Dealing with the black economy in this broader sense, one must also consider tax evasion.
关于广义的黑市经济，必须也考虑到税款的偷漏。
Unemployment is 24% and as much as 40% of output is in the black economy.
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The black economy is especially attractive to those still receiving unemployment benefits based on previous earnings.
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They may, for example, be registered as disabled or be working in the black economy.
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