Assiduous

(adj.) marked by care and persistent effort; 'her assiduous attempts to learn French'; 'assiduous research'; 'sedulous pursuit of legal and moral principles' .

丹尼整理

• Mary would sit and watch me by the hour together: then she would take lessons; and a docile, intelligent, assiduous pupil she made. 夏洛蒂·勃朗特. 简·爱.
• Thus, after four years of assiduous labor, fatigue, and difficulty, are we again set afloat by a new and most unexpected obstacle. 鲁伯特·萨金特·荷兰. 历史性发明.
• Nothing could be less demonstrative than the friendship of the elder lady, but also nothing could be more vigilant, assiduous, untiring. 夏洛蒂·勃朗特. 雪莉.

整理:韦尔登