Aac
abbr. 自动振幅控制（automatic ampltiude control）
🗣️ 情景例句
But first in the school-rooms.
但首先是在教室 。
Have you had breakfast already?
你已经吃了早餐吗？
I'll check back with by head office for you.
这个我回头会跟总公司查核一下。