Echoranging
回声测距法
🗣️ 情景例句
No news is good news as far as I'm concerned.
我觉得没有消息就是最好的消息。
The petroleum region is centered largely in the north.
那里的石油区大部分集中在北部。
Yes, I do. But it's only a small one.
是的，有，但是很小。