The "國中精選詞彙--國中生必背英文單字1770個" app is a useful tool for learning English vocabulary. It is easy to use and can significantly improve learning efficiency. The app features 1770 carefully selected English words that are essential for middle school students to memorize.

Each word and example sentence comes with a human voice pronunciation. You can also record your own voice to compare or add notes to help with understanding. After each lesson, you can test your learning progress with the app's testing function, which allows you to repeat learning on difficult words.

The app also includes an advanced listening challenge feature to test your listening skills. All learning and testing progress is recorded and displayed in charts to help you track your progress. With its user-friendly interface, the app is an excellent tool for students looking to improve their English vocabulary.