刻苦学习持之以恒study: n. 1.用功,勤学;〔常 pl. 〕学习;研究 (of ...study assiduously: 刻苦钻研perseveringly: 坚忍不拔地assiduously: 恳切地; 勤勉地assiduously propagate: 竭力宣传下载手机词典可随时随地查词查翻译