其中一个构造函数以双精度浮点数作为输入，另一个以整数和换算因子作为输入，还有一个以小数的String表示作为输入。

One takes a double-precision floating point as input, another takes an integer and a scale factor, and another takes a String representation of a decimal number.

youdao

在数学和艺术之中，当两个常量的总和和常量中较大数的比等于常量中较大数和常量中较小数的比时，它们就是黄金比例。

In mathematics and the arts, two quantities are in the golden ratio if the ratio between the sum of those quantities and the larger one is the same as the ratio between the larger one and the smaller.

youdao

我们处理小数的时候要精心些，比方说我们在做一个简单的统计程序时，要限制结果不能超过100，要尽可能晚的把它转化成浮点数。

We need to be accurate to two decimal places (e.g. in a simple accounting package), scale everything up by 100, and convert it back to floating point as late as possible.

youdao

It just throws the decimal point away and that's because, again, these are ints and the answer intuitively should be a floating point value, but I need to be more specific.

它直接把小数点后面的数值丢弃掉了，因为，凭直觉，那些整型数和结果应该是一个浮点数据,但是我需要一个更精确的数值。

哈佛公开课 - 计算机科学课程节选

So a floating point value again is a number with a decimal point, so it depends.

一个浮点型数据就是一个,带小数点的数。

哈佛公开课 - 计算机科学课程节选

And I've done fib of 5, which is a small number. If we look at some other things, for example, let's get rid of this.

我已经计算了fib，这是一个小数，如果我们看看其它的东西,例如，让我们放开这个。

麻省理工公开课 - 计算机科学及编程导论课程节选