Q-r
abbr. recrystallised quartz 重结晶石英（科技符号）
🗣️ 情景例句
Why advanced?
为什么是高级的？
How much is it all together?
一共多少钱？
I have just received a letter from my old school, informing me that my former headmaster,
我刚刚收到母校的一封信，通知我说以前的校长