单词学习：diligence 名词
diligence
/ˈdɪlɪdʒəns/
勤奋，勤勉；细致，用心
Mr. Gu's diligence in preparing his lessons every day sets a great example for his students.
顾老师每天备课的勤奋为他的学生们树立了一个极好的榜样。
单词卡片
卡片已就绪
