“他们称它为清洁煤，因为他们使用了一些过滤器，但实际上是胡说八道，”无煤公民团体的默尔扎·马尔齐奥利说，该组织位于附近古国伊特·鲁里亚的塔奎尼亚镇。

"They call it clean coal because they use some filters, but it is really nonsense," said Marza Marzioli of the no coal citizens group in the nearby ancient Etruscan town of Tarquinia.

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传统上，煤炭都是在开采地燃烧——尤其是用以取暖和发电的动力煤或电煤。

Traditionally, coal is burned near where it is mined - particularly so-called thermal or steaming coal, used for heat and electricity.

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据估算，实际上这些地下潜燃的火光一年要烧尽约2 000万吨的煤，要知道这可相当于德国去年全国上下总产煤量！

In fact, these underground blazes burn through an estimated 20 million tons of coal a year, the equivalent of the entire coal production of Germany last year.

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