Echosounding
音响测深法
🗣️ 情景例句
Thank you.
谢谢 。
What's the basis of your belief that the product is safe?
你凭什么相信产品是安全的？
Sam Benton, the local butcher, had lost his wallet while taking his savings to the post office.
本顿在把存款送往邮局的途中把钱包丢了。