Preamp
n. （无线电）前置放大器
🗣️ 情景例句
from the various generations of future users.
从不同辈份的未来使用者中。
You're very cheerful today.
你今天很快活。
found a brother who was thought to have been killed twenty years before.
巴斯曼如何找到了据信已在20年前死去的兄弟的事。