Qa
abbr. 品质保证（Quality Assurance）；质量评价（Quality Assessment）
🗣️ 情景例句
But first in the school-rooms.
但首先是在教室 。
Some do it for an endless pursuit of profit, and others, for the sake of the well-being of the society.
有人做生意是为了无止境的追求利润，有的人是为了社会的繁荣。
Good morning.
早上好。