Echoranging
回声测距法
🗣️ 情景例句
Want to hear them?
你想听听吗？
Wise men learn by other men's mistakes;fools by their own.
聪明人从旁人的错误中吸取教训，愚笨人则从自身的错误中吸取教训。
Last Wednesday, I went for a walk in the woods.
上星期三我到树林里去散步。