永远不要问别人这个东西多少钱买的，也不要告诉人你的东西多少钱买的。
Never ask people how much he got this, and don't tell people how much you spent.
例如，“如果我在这个计算站点上运行某某东西，要花多少钱？”
For example, "what does it cost me to run such and such at that computing site?"
如果我不买这个最贵的东西，可以少付多少钱呢？
How much less do I have to pay if I don't buy the most expensive item?
如果我不买这个最贵的东西，可以少付多少钱呢？
How much less do I have to pay if I don't buy the most expensive item?
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