phonetic reference

例句：

1. 1. In teaching English, it's important to have a good phonetic reference for the pronunciation of new words.
   在教授英语时，为新词提供良好的发音参考非常重要。
2. 2. The teacher gave us a phonetic reference chart to help us learn the correct pronunciation of the new words.
   老师给我们提供了一张音标参考表，帮助我们学习正确发音新词。
3. 3. Students often use phonetic references to improve their pronunciation skills.
   学生经常使用音标参考来提高他们的发音技能。