reading-writing amplifier

例句：

1. 1. This amplifier is designed to improve the quality of audio signals for reading and writing purposes.
   这款放大器旨在提高音频信号的阅读和写作质量。
2. 2.The teacher used an amplifier to amplify the sound of the lecture so that all students could hear clearly.
   老师使用了一个放大器来放大讲座的声音，以便所有学生都能清楚地听到。
3. 3. The amplifier was essential for the project, as it helped to amplify the voices of the actors during the rehearsals.
   这个放大器对于这个项目至关重要，因为它在排练期间帮助放大了演员们的声音。