Or in a given row, treat each number as part of a decimal expansion.

或是将其中一列作十进位展开。

That makes 3.14 not only an irrational number (because its decimal expansions are infinite) but also a " constant" , at least with regard to calculating the measurements of a circle.

这使得 3. 14 不仅是一个无理数（因为它的小数展开是无限的）， 而且还是一个“常数” ，至少在计算圆的尺寸方面是这样。