Preamp
n. （无线电）前置放大器
🗣️ 情景例句
Can you show me how to apply this make-up correctly?
你能告诉我怎么正确地使用这种化妆品吗？
He was anxious about his son's safety.
他担心他儿子的安全。
He doesn't like writing letters, but he likes receiving them.
他不爱写信，但他却喜欢收到信。