Qaing
(qa 的现在分词) abbr. 品质保证（Quality Assurance）；质量评价（Quality Assessment）
🗣️ 情景例句
How do you say that in English?
那个用英语怎么说？
Do you have any brothers?
你有兄弟吗？
Once the oxygen content of the air had risen to 25% it was ready to burn.
一旦氧气在空气中的含量达到25%，它就要燃烧。