alternate design

例句：

1. 1. The team alternatesbetween playing on the left and right wings.
   球队在左翼和右翼之间轮换。
2. 2. Theydecided to alternate between two different programs fortheir next project.
   他们决定为下一个项目交替使用两个不同的程序。
3. 3. Thestudents are learning to alternatebetween reading aloud andsilently reading from the text.
   学生们在学习交替朗读和默读文本。