metacheirisis

例句：

1. 1. The teacher explained the concept of metacheirisis to us.
   老师向我们解释了元音重音的概念。
2. 2. She tried to master the art of metacheirisis.
   她试图掌握元音重音的艺术。
3. 3. In this lesson, we will learn about the importance of metacheirisis in speech.
   在这节课中，我们将学习元音重音在语音中的重要性。