The revenue, we're generating over a million dollars a month in revenue, and well more, and that way covers our expenses and we're not even doing anything cool yet.

现在，每个月的营业收入,都超过100万，或许更多，这大大超过了开支,我们什么都没做就已经收到了丰厚的回报。

斯坦福公开课 - 扎克伯格谈Facebook创业过程课程节选

It expands. You change your constraints on your system, you heat it up some more, then you take the heat source away, and you put it back in contact with the atmosphere. And you cool it a little bit, change the constraints, cool it a little bit more, and heat, and you've got a closed cycle engine.

让它与大气接触冷却,改变约束，使它继续冷却，然后又再次加热,这就是循环热机，我们以前也研究过，更复杂的机器。

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