Then, after you define what your system is, whatever is left over of the universe is the surroundings.

当你定义了你的系统后，宇宙的其余部分,就是环境。

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In fact, that is essential to banking and it's kind of part of the -you might almost call it the definition of a bank.

事实上,这对银行业务是至关重要的,并且这是部分的...,几乎可以说这就是银行的定义

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And if food is anything you eat, it gives you a nutrient, then basically everything satisfies the criteria for food; not everything in the world, but most things would.

若不论吃什么,只要提供营养就是食物,那基本上没有什么不满足食物的定义,倒不是说一切东西,至少绝大部分都满足

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