Q-r
abbr. recrystallised quartz 重結(jié)晶石英（科技符號）
??? 情景例句
I am studying two majors, and it's quite a burden on my time.
我有兩門主修課，這占據(jù)了我很大一部分時(shí)間。
A life without a purpose is a ship without a rudder.
人生無目的，猶如船失去了舵。
You'd better find it quickly. Oh, too late.
你最好趕快找到它。啊，太遲了。