So when it comes to nervous communication, ACh is really the coin of the realm. The premium currency.

所以当谈到紧张的交流时，ACh 真的是这个国家的通用货币，高级货币。

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。

I think it would scarce be an exaggeration to say that there is no moral good which has not to be paid for in coin of the realm.

我认为可以毫不夸张地说，没有任何道德善事是用王国的硬币来换取的。