One consequence is a large black economy, which also keeps the tax take low.

造成的结果之一便是黑市经济规模庞大，国家税收很低。

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And a vigorous and growing underground (black) economy makes a big difference.

同时一个活力且持续增长的地下(黑色)经济产生了很大的差别。

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Spain is lucky that strong social networks (helped by the black economy) help to prevent civil unrest.

西班牙(被非法经济所支撑的)坚实的社会网帮助其防止了市民动乱，从这一点上来说，西班牙又是幸运的。

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