R-f preselectors
[电] 射频预选器
🗣️ 情景例句
What does he say?
他说了些什么？
I would like to print this film.
我要冲洗这底片。
The police had been told that a bomb had been planted on the plane.
有人报告警察，说飞机上安放了一枚炸弹。