amplify

1. V-T If you amplify a sound, you make it louder, usually by using electronic equipment. 扩大 (声音)

This landscape seemed to trap and amplify sounds. 这种地形好像能聚拢和扩大声音。

The music was amplified with microphones. 那音乐被麦克风扩大了。

2. amplificationN-UNCOUNT 扩音

...a voice that needed no amplification. …一个不需要扩音的嗓门。

3. V-T To amplify something means to increase its strength or intensity. 增强

The mist had been replaced by a kind of haze that seemed to amplify the heat. 这薄雾已经被一种热汽代替了，这似乎加重了炎热的程度。