R-f preselectors
[电] 射频预选器
🗣️ 情景例句
I was deeply impressed by his speech.
他的演讲给我留下深刻的印象。
Do you work near the library?
你在图书馆附近工作吗？
So what do you want me to do? asked the detective.
那么你想要我做什么呢？侦探问。