Qiánshìbùwàng, hòushìzhīshī, wǒmen yào cóng lìshǐ zhōng xīqǔ jiàoxùn.
Don't forget the past; it's a teacher for the future, we must draw lessons from history.
Zhècì shībài jiù dāng shì hòushìzhīshī, xiàcì yīdìng bùhuì zài fàn tóngyàng de cuò.
Treat this failure as a lesson for the future; we won't make the same mistake next time.
