Eng: Assiduous...

敏

Adroit, Agile, Assiduous, Clever, Diligent, Fast, Keen, Quick, Quick witted

刻苦

Assiduous, Frugal, Hardworking, Simple

勤奮

Assiduous, Attentive, Attentiveness, Diligence, Diligent, Implacable, Industrious