In English we say when something's Greek to me, it means we don't understand it.

在英语中当我们说，这些事对我来说好难理解啊，意思就是我不理解。

" It's Greek to me, " Greek being the language of Greece, of course.

“这对我来说是希腊语，”当然，希腊语是希腊的语言。

Actually, it reminds me, in English when you don't understand something or it's confusing, you can say, " It sounds Greek to me."

实际上，这句话提醒了我，在英语中，当你不理解或者感到困惑的时候，你可以说，it sounds Greek to me（这对我来说就是天书）。