Qar
[医][=quality assurance reagent]质量保证试剂
🗣️ 情景例句
Remember to lock your door and windows when you leave the house.
出门前记得锁好门窗。
I must admit I had my doubts.
我必须承认我当初是我疑虑的。
and who drew his conclusions fearlessly.
并大胆地得出自己的结论。