Radioecho
无线电回波, 无线电反射信号
🗣️ 情景例句
What are you afraid of?
你怕什么
Is there a pay pnone nearby?
这附近有没有公用电话？
Radio and television have made it possible for advertisers to capture the attention of millions of people in this way.
电台、电视使做广告的人可以用这种手段吸引成百万人的注意力。