Qa
abbr. 品质保证（Quality Assurance）；质量评价（Quality Assessment）
🗣️ 情景例句
I started traveling twenty-four hours ago.
从出门到现在已经二十四小时了。
That's good wisdom which is wisdom in the end.
最后的聪明才算真聪明。
OK, listen carefully, please.
好，请仔细听着。