孜zi1孜zi1不bat1倦gyun6

zi1 zi1 bat1 gyun6zī zī bù juàn

English

lit. diligent and never slacking (idiom); continuous concentrated effort
assiduous (in study)
to concentrate
to teach or study industriously

粵語 — Cantonese

勤力咁教導或者學習

Examples

佢孜孜不倦咁教育學生。
He teaches students industriously.

Sources: cc-cedict, rime-cantonese, words.hk

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