work in fits and starts
⇒ 你三天打鱼,两天晒网,根本练不好书法。
You lack perseverance, so you'll never get anywhere with your calligraphy.
英语词典包含298861条英英释义在线翻译词条,基本涵盖了全部常用单词的英英翻译及用法,是英语学习的有利工具。