But because you only have a finite number of bits, the takeaway for today is that there's only so much precision.

因为只有有限个比特，今天的重点就是，它就这么点精度。

哈佛公开课 - 计算机科学课程节选

So, a 32 bit of float gives you a bunch of precision.

2比特的浮点型数据精度更大。

哈佛公开课 - 计算机科学课程节选