Lǎoshī de jiàohuì yányóu-zài'ěr, wǒ bù gǎn wàngjì.
The teacher's instructions still ring in my ears; I dare not forget them.
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From 《左传·文公七年》: 今君虽终,言犹在耳 - 'though the sovereign has passed, his words still ring in our ears.' Originally a minister's vow to honor a late ruler's instructions.