商业银行体系的健康，取决于一个假设——无论何时，大多数的存款人都会将他们的钱放在银行里。

The health of the commercial banking system depends on the assumption that, at any time, most depositors will keep their money in the bank.

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假设他们把钱花光，一分不留。

Suppose they spend all of it. Every penny.

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为了计算一个家庭能够积攒多少钱，需要作出一些假设，以下是贷款中心有关14年计算的假设。

To figure how long long a family would need to save, you must make some assumptions. Here's how the CRL calculates 14 years.

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Let's assume that I know what I'm earning next year; there is actually uncertainty about it.

假设我知道我明年会赚多少钱,虽然这通常都是不确定的

耶鲁公开课 - 金融市场课程节选

Let's assume that you've won the lottery, and have serious money that you foolishly wish to invest in the stock market There are two basic strategies to choose from in investing.

让我们假设你赢了彩票，然后又一大笔钱,而你很傻的想要投资到股票中去,有两个投资策略,可以选择。

麻省理工公开课 - 计算机科学及编程导论课程节选