And that right from my school days became an unwritten formula, unwritten law at home that we don't talk about last game, we talk about next game.

从我学生时代开始，这就成了一个不成文的公式，在家里不成文的法律，我们不谈论上一场比赛，我们谈论下一场比赛。

It never has been, but some people say that it is an " unwritten law" – a law that people obey and should be respected even though it isn't of course the actual law of the government.

从来没有，但有人说这是“不成文法”——人们遵守并应该尊重的法律，尽管它当然不是政府的实际法律。