孜孜不倦
- na.diligently
- 网络tireless; like a beaver; industrious

孜孜不倦
1.diligently; assiduous and never tired; assiduously; bestir oneself; diligently working without feeling tired; indefatigably; persist in one's study with untiring vigour; study tirelessly; take great pains over; with indefatigable zeal
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