Greek做名词解释时，意思是“希腊人、希腊语”等，All Greek to sb.这里取希腊语之意，意思是“每个人都跟我说希腊语”，用来表示“我不明白、不懂”，也就是我们说的“一窍不通”。

【例句】
My son is studying physical chemistry but it's all Greek to me.
我儿子正研究物理化学，但我对此一窍不通。

She tried to explain how the system works, but it's all Greek to me.
她努力解释系统如何运作，可我怎么也弄不明白。