devoicing rule

例句：

1. 1. The teacher explained thedevoicing rule to the students.
   老师向学生们解释了元音发音规则。
2. 2. Thisis a common devoicing rule inEnglish pronunciation.
   这是英语发音中常见的元音发音规则。
3. 3. By followingthe devoicing rule, you canimprove your English pronunciation.
   遵循元音发音规则，你可以提高你的英语发音。