alternate hot and cold caloric test

例句：

1. 1. The team decided to alternate between twodifferent strategies.
   团队决定交替使用两种不同的策略。
2. 2. They alternated between reading and watchingTV during the break.
   他们在休息时间交替阅读和看电视。
3. 3. The students alternated inplaying basketball with each other.
   学生们轮流打篮球。