R-f amplifier
[电] 射频放大器
🧩 词语组成解析
🗣️ 情景例句
Do you remember that old desk?
还记得这张旧桌子吗？
This window is just as big as that one.
这扇窗户刚好和那扇一样大。
Yes, he did.He telephoned at nine o'clock.
是的，打了。他在9点钟又打电话。