事后諸葛亮
monday morning quarterbacking;criticize or pass judgment from a position of hindsight;be wise after the event
這僅僅是～罷了。These are the judgments of hindsight,however./～好當(dāng)。It is easy to criticize with the benefit of hindsight.
事后諸葛亮shì hòu zhūɡě liànɡ
事情過去以后，才悟出道理和解決的辦法。形容一切都晚了。be wise afterwards, prophesy only after the event