We try to ring the changes in the way we allocate tasks so that people don't get bored.我们试图变换一下分配任务的方式，这样大家就不会厌烦了。Choose a variety of foods and ring the changes with meals.选择不同种类的食物，每顿饭换换花样。It won't hurt to ring the changes a little after five years.五年了，变换一下不会有什么坏处的。Let's ring the changes and repaint the whole house.我们来做些改变，把整个房子重新粉刷一遍吧。