But fire also leaves the soil bare, releasing carbon, and worse than that, burning one hectare of grassland gives off more, and more damaging, pollutants than 6,000 cars.
可是火也会让地表被裸露，碳元素释放到大气层， 更糟糕的是， 烧掉一公顷的草地 所释放的有害污染物，要比6000辆汽车 排放的总和还要多。