amplificatory

例句：

1. 1. The speaker used a microphone to amplify their voice.
   演讲者使用麦克风来放大他们的声音。
2. 2.The artist amplified the sound of the music for an audience of 100 people.
   艺术家为了100人的观众群体，放大了音乐的声音。
3. 3.The teacher amplified the lesson by using examples from history.
   老师通过历史例子来加强课程内容。