Radioecho
无线电回波, 无线电反射信号
🗣️ 情景例句
I need some new shoes to go with these pants.
我需要双新鞋来配这条裤子。
No! Women should stay at home.
不，女人应该呆在家里！
How long have you been at this school?
你到这学校有多么时间了？