但边际购买者很要紧，所以中国很重要。
But it is the marginal buyer that matters, so China is important.
他用幽默的语言，好笑的例子和诸如“卖空”和“边际购买”之类模糊的术语向刚刚崛起的投资人讲解神秘的金融世界。
Using punny humor and wry examples, he explained the arcane world of finance, with its foggy phrases such as "selling short" and "buying on margin, " to the newly empowered personal investor.
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