amplifier

n. /ˈæm.plə.faɪ.ɚ/ B2

放大器；扩音器

An electronic device that makes electrical signals and sounds louder.

仙境例句

An amplifier, her sister dreamed, could make the White Rabbit's little trumpet as loud as thunder.

姐姐梦见，一台扩音器能让白兔的小喇叭响得像打雷一样。