Adam Smith said that prosperity depends on the rule of law, peace and low taxes.

亚当·斯密说繁荣取决于法制的规则，和平以及低水平的税收。

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For example, as for the food prices, the general rule is that the price is low in fall and high in spring.

比如就粮价而言，一般的规律是秋季粮食价格低，春季粮食价格高。

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Perhaps, the tip might be regarded as the most important underlying rule in America. The bosses of the restaurants will prefer to offer a low pay to the doormen and the waiters.

小费大概得算上美国社会最重要的“潜规则”，对于酒店的门童、餐馆的服务员，老板有意会付比较低的工资，小费成了他们主要的收入。

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The rule only applies at low speeds because because vehicles traveling above 18 miles per hour naturally make enough noise to be heard.

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Still, there have been exceptions to the rule of starting at a low point.

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That, in turn, forced some endowments to break the cardinal rule of investing and sell low what they'd previously purchased at premiums.

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