Physiological acoustics
[电] 生物声学
🧩 词语组成解析
🗣️ 情景例句
We were all sorry when we heard that your brother had had an accident.
我对你弟弟的意外感到遗憾。
He who does not advance falls backward.
不进则退。
What time will the next train leave?
下一班火车什么时候开？