assiduity（n.）
"勤奋"，15世纪初，源自拉丁语 assiduitatem（主格 assiduitas）"持续存在"，是 assiduus（见 assiduous）的质量名词。
Industry keeps at work, leaving no time idle. Assiduity (literally, a sitting down to work) sticks quietly to a particular task, with the determination to succeed in spite of its difficulty, or to get it done in spite of its length. Application, literally, bends itself to its work, and is, more specifically than assiduity, a steady concentration of one's powers of body and mind .... [Century Dictionary]
Industry 不停地工作，不留下任何空闲时间。Assiduity（字面意思是坐下工作）静静地坚持特定的任务，决心克服困难或完成漫长的任务。Application，字面意思是弯曲自己的工作，比 assiduity 更具体地是身心力量的稳定集中....[世纪词典]
该词起源时间：15世纪初