Nine is usually thought of as a lucky number because it is the product of three times three.

9通常被认为是一个幸运数字，因为它是3乘以3的乘积。

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Most number systems, then, are the by-product of two key factors: the human capacity for language and our inclination for focusing on our hands and fingers.

因此，大多数数字系统都是两个关键因素的意外结果：人类的语言能力及我们对手和手指的关注倾向。

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Retrieves the information for the product that has the input item number.

检索拥有输入项目号的产品信息。

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And, that's equal to the product of e the proton number times e.

正等价于,质子数乘以。

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If you had one negative number in it, then the product would be a negative number and, if you took a root of that, then you might get an imaginary number.

如果这当中有一个负数,乘积就会变成负的,如果你对一个负数开根号,你就会得到一个虚数

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n So the velocity is given by this product of the quantum number n Planck constant 2 pi mass of the electron time the radius of the orbit, which itself is a function of n.

速度是量子数,普朗克常数2π乘以轨道半径的值,它自身也是n的函数。

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According to the U.S. Consumer Product Association, 2007 was the worst year ever in terms of the number of product recalls, with 467 consumer products recalled--and that doesn't include auto and medical snafus.

FORBES: Magazine Article

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