R-f preselectors
[电] 射频预选器
🗣️ 情景例句
OK, here you are.
好的，给你。
To rush to the scene of the accident
赶往意外事故的现场
He called out to the children and threw the ball back to the bank.
他大声叫着那些孩子，把球扔回到岸上。