Preamp
n. （无线电）前置放大器
🗣️ 情景例句
What time can you send one over?
那你们什么时候能派人来呢？
I have not traveled everywhere in Guangzhou.
我还没有游遍广州。
Yes, I remember. You were not here yesterday. What was wrong? Were you ill?
是的，我记得。你昨天没有来。怎么啦？你病了吗？