But the relative atomic mass does change.

但是相对原子质量确实发生了变化。

Which means that carbon has a relative atomic mass of 12.01 amu.

这意味着碳的相对原子质量为 12. 01 amu。

The relative atomic mass, then, ends up being about halfway between 107 and 109, 107.8682.

然后，相对原子质量最终约为 107 和 109 之间的一半， 即 107. 8682。

The real coin of the realm when it comes to measuring stuff in chemistry is relative atomic mass.

在测量化学中的东西时， 真正的硬币是相对原子质量。

So the relative atomic mass of carbon is a weighted average of these three masses, which comes out to 12.01.

所以碳的相对原子质量是这三个质量的加权平均值， 结果为 12. 01。