Free fatty acids build up in the oil when you burn stuff over and over again.
游离脂肪酸建立在石油燃烧时，一遍又一遍的东西。
That's why this workout focuses on the big stuff: big muscles, big weights, big calorie burn, big payoff.
这就是为什么肌肉锻炼是一件“大”工程：大块肌肉、大重量、大量卡路里消耗、大量的付出。
What is the point if we burn vast quantities of fossil fuels to make, buy and consume ever more stuff, without noticeably benefiting our well-being?
假如我们消耗大量的矿物燃料来制造、购买以及消费更多的东西，却并没有非常明显的增加幸福感，这又有什么意义呢？
What is the point if we burn vast quantities of fossil fuels to make, buy and consume ever more stuff, without noticeably benefiting our well-being?
假如我们消耗大量的矿物燃料来制造、购买以及消费更多的东西，却并没有非常明显的增加幸福感，这又有什么意义呢？
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