variation of stresses

例句：

1. 1. The temperature variation in the area is significant.
   该地区的温度变化显著。
2. 2. The genetic variation among different species is a fascinating topic.
   不同物种之间的遗传变异是一个引人入胜的话题。
3. 3. The study of variation in language usage has been a popular area of research.
   语言使用中的变化研究一直是一个热门领域。