Acoustical vibration
[机] 声音振动
🧩 词语组成解析
a. 听觉的, 声学的
🗣️ 情景例句
about taking care of babies, I assure you.
如何照顾小孩， 我向你保证。
Not necessarily.
不一定啦！
Then the woman simply took the parcel and walked out of the shop without paying.
然后，那妇女拿过包就走出了商场，根本没有付钱。