Preamp
n. （无线电）前置放大器
🗣️ 情景例句
Good morning, Mr. Smith. I brought the contract you are been looking for.
上午好，斯密司先生。我带来了你要等待的合同。
He must needs go whom the devil drives.
势在必行。
He was a sleek, short man with a bright bald-head, pink face, and gold-rimmed glasses.
他身材矮小，穿着时髦，头光秃，面粉红，戴一副金丝边眼镜。