Echosounding
音响测深法
🗣️ 情景例句
Well Tom, I hope you have a good time in America. I'll miss you.
就这样了，汤姆。我希望你在美国玩得很愉快。我会想你的。
The moon does not heed the barking of dogs.
月亮不怕狗吠。
What is needed in the case of noise is a study of large numbers of people living under noisy conditions,
对于噪音问题，需要对大量生活在噪音中的人进行研究，