juàn dài
worn out
exhausted
dispirited
zī zī bù juàn
lit. diligent and never slacking (idiom); continuous concentrated effort
assiduous (in study)
to concentrate
yàn juàn
to be weary of
to be fed up with
tedious
bù juàn
tireless
untiring
indefatigable
bù zhī pí juàn
untiring
not recognizing tiredness
huì rén bù juàn
instructing with tireless zeal (idiom, from Analects)
zhí yè juàn dài zhèng
professional boredom syndrome
xué ér bù yàn , huì rén bù juàn
study tirelessly, teach with endless enthusiasm (idiom, from Analects)
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