assiduous
adj. 刻苦的，勤勉的
例句
Podulski had been assiduous in learning his adopted language.
珀杜斯基曾经勤奋地学习他所选的外语。
《柯林斯英汉双解大词典》
His spirit of assiduous study is worthy of emulation.
他刻苦钻研的精神，值得效法。
《新英汉大辞典》
Want to know how to spell assiduous?
想知道如何拼写assiduous吗？
