R-f preselectors
[电] 射频预选器
🗣️ 情景例句
It's important for you to keep a cool head at this moment.
这时候保持头脑冷静是很重要的。
After a storm comes a calm.
否极泰来。
What must I do, MRS.Jones?
我应该做些什么呢，琼斯夫人？