Gathering your resources to "try hard" requires burning energy in order to overcome your currently low arousal level.

调动资源来“努力尝试”，需要消耗精力，以克服目前的低唤醒水平。

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All right, so I'm burning some energy, I'm burning some fuel to do this somehow, to get that work to happen.

而这个路径需要先加热再冷却，这样，我需要能量来源，比如燃料，来完成做功。

麻省理工公开课 - 热力学与动力学课程节选

It turns out everything around us moves energy around in one way or the other If you're a biological system, you're burning calories, burning ATP.

我们周围的一切物质,都以这样那样的方式传递着能量,如果你是一个生物系统，你会燃烧卡路里，燃烧。

麻省理工公开课 - 热力学与动力学课程节选

In the case of energy expenditure, how many calories people were burning, there wasn't quite such a difference, but again, it was in the favor of the individuals, that the people were estimating they burned this many calories from physical activity, but this is actually the number that they burned.

就能量消耗来说,人们消耗了多少卡路里,两者之间的差异并不是如此巨大,但又一次,由于人们的一厢情愿,人们估算从体育活动中,他们消耗了这么多的卡路里,但数据是他们实际消耗的

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

But there's no denying that burning natural gas (methane, that is) produces less carbon dioxide per unit of energy than burning coal.

FORBES: Energy Under Our Feet

In fact, it is now positioned as a solution to global climate change as a replacement for fossil fuel based energy (burning coal or natural gas).

FORBES: What Are The Most Important Things To Know/Understand About Nuclear Energy?

Some developers are now looking to generate energy by burning straw, which the UK has an abundant supply of and which, as a by-product of agricultural crops, does not have an impact on the food verses fuel debate currently engulfing the biofuel industry.

BBC: Time to encourage biomass growth