Preamp
n. （无线电）前置放大器
🗣️ 情景例句
Richard and Marilyn bought it for me for my birthday.
这是Richard和Marilyn送给我的生日礼物。
He's a composer of popular songs.I like his music a lot.
他是流行歌曲作曲家，我很喜欢他的音乐。
when H.M.S. Porcupine was put at the disposal of the Royal Society for several cruises,
皇家学会用英国"豪猪号舰艇进行了几次巡航后，