價格：免費
檔案大小：150 MB
版本需求：系統需求：iOS 9.0 或以後版本。相容裝置：iPhone、iPad、iPod touch。
支援語言：英語
Mastering the American Accent:
- Learn to speak standard American-style English with clarity, confidence, accuracy.
- Exercises help you master tricky vowel and consonant sounds and employ correct syllable stress.
- illustrations show you correct configurations of lips and tongue for specific pronunciation exercises.
支援平台：iPhone, iPad