In the past, the material of choice has been carbon black, a sooty substance made by the incomplete combustion of petroleum products.

过去，备选材料为碳黑，这是一种石油产品不完全燃烧后形成的黑色物质。

The problem is that even though the fuses look uniform, they don't burn evenly, so if you cut one in half, for example, one side might burn longer than the other.

问题是即使保起来很均匀，但是它们不能够均匀的燃烧，所以如果你剪掉一半，一边可能会比另一边烧的更长。

Producing power without burning fossil fuels, most utilities scale power is stored this way, using water.

在不燃烧化石燃料的情况下就可以发电，大多数公用事业规模的电力用这种方式储存、使用水。

For a fire, especially one, you know, not just a fire burning itself, but has some explosive nature to it, it's going to want to just continue moving and growing in that direction.

对于火灾，特别是不只是自身燃烧的火灾，还具有爆炸性，它会继续朝那个方向移动和增长。

There was a fragrance about her that communicated itself to his own emotions, kindling the embers to a glow that did not burn, but merely warmed.

她身上散发出一种香气，能传达出他自己的情绪，点燃余烬，发出不燃烧的光，但只是温暖。

It got even stranger: Active people who work out  regularly do burn more than inactive people.

更奇怪的是：经常锻炼的活跃人士确实比不活跃的人燃烧更多的卡路里。

In Britain, the government is wrestling with the same challenge as Mokoena of heating homes without burning fossil fuels.

在英国，政府正在努力应对与 Mokoena 相同的挑战，即在不燃烧化石燃料的情况下为房屋供暖。

" Firefighting" is the act of trying to put out fire that you don't want burning.

" 消防" 是指试图扑灭你不希望燃烧的火灾。