孜孜不倦

zīzībùjuàn
  1. lit. diligent and never slacking (idiom); continuous concentrated effort
  2. assiduous (in study)
  3. to concentrate

CEDICT

diligent; assiduous

Wiktionary

勤勉而不知疲倦。《三国志．卷四一．蜀书．向朗传》：「自去长史，优游无事垂三十年，乃更潜心典籍，孜孜不倦。」《孽海花．第二五回》：「直到放了湘抚，一到任，便勤政爱民，孜孜不倦。」也作「孳孳不倦」。

重編國語辭典

勤勉而不知疲倦

維基詞典

Entry Composition

1 孜孜 zīzī
  1. diligent
  2. hardworking
  3. industrious
  4. assiduous
2 不倦 bùjuàn
  1. tireless
  2. untiring
  3. indefatigable

Related entries

兢兢业业 jīngjīngyèyè
  1. (idiom) conscientious
  2. assiduous
刻苦 kèkǔ
  1. hardworking
  2. assiduous
勤勤恳恳 qínqínkěnkěn
  1. industrious and conscientious
  2. assiduous
勤恳 qínkěn
  1. diligent and attentive
  2. assiduous
  3. sincere
勤苦 qínkǔ
  1. hardworking
  2. assiduous
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