Acoustic velocity
[机] 音速
🧩 词语组成解析
acoustic
[ə'ku:stik]
adj. 听觉的;声学的;原声的;音响的;
🗣️ 情景例句
Not too bad. How about yourself?
还可以。你怎么样？
I leave the office at 7.
我七点离开办公室。
'I'm very sorry,' he said.
“实在抱歉，”他说，