year in, year out
⇒ 只要坚持锻炼,日久天长就会有效果。
You just have to keep on with the exercise — you'll see the results over time.
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。