assiduous
/əˈsɪdʒuəs/Someone who is assiduous works hard or does things very thoroughly. 勤奋的; 坚持不懈的
adjective [原级] 刻苦的，勤勉的
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。
as-
assiduous
勤奋的（as+sid 坐+uous→一再坐着[学习] →勤奋）
