Now we'll take you through the underground economy itself.

我要带你了解一下地下经济本身。

And in developing countries, the underground economy accounts for more than a third of economic output.

在发展中国家，地下经济占经济产出的三分之一以上。

But economists worry that the growth of the underground economy can set off a negative cycle.

但经济学家担心地下经济的增长会引发一个恶性循环。

But the underground economy can offer jobs and work where they don't otherwise exist.

但是地下经济可以提供本来不存在的工作。

So what exactly do we mean when we talk about the underground economy?

那么，我们在谈论地下经济时到底是指什么呢？

In the US, the underground economy is probably worth somewhere between one and two trillion dollars.

在美国，地下经济的估值可能在一万亿到两万亿美元之间。

Since most of the transactions that take place in the underground economy take place in cash.

因为大多数地下经济的交易都是以现金形式进行的。

Thomas says that the underground economy gets people what they want.

托马斯说，地下经济可以让人们得到他们想要的东西。

The " underground economy, " for example, could refer to people who work without the government knowing about it and without paying taxes.

例如， “地下经济”可以指在政府不知情的情况下工作并且不纳税的人。