孜孜不倦
lit. diligent and never slacking (idiom); continuous concentrated effort; assiduous (in study)
词频 2.9
含义
- lit. diligent and never slacking (idiom); continuous concentrated effort
- assiduous (in study)
- to concentrate
lit. diligent and never slacking (idiom); continuous concentrated effort; assiduous (in study)
词频 2.9