与大气中0.04%的CO 2 水平相比，一座燃煤电厂排放的废气中，二氧化碳的水平竟然达到10%左右。

The exhaust from a coal-fired power station is around 10% carbon dioxide, however, whereas the level in the atmosphere is a mere 0.04%.

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这和我们国家用30%的税收建成的一座联合涡轮燃气发电厂的产能一样，不同的是，人家不产生噪音和废气。

Thanks to a 30% federal tax credit, that works out as much the same as a combined-cycle gas-turbine plant-but without the noise and fumes.

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