Yttria
n. 氧化釔\\n[化] 三氧化二釔; 氧化釔
??? 情景例句
And what does your father do?
令尊是做什么的？
I don't think he will get here on time.
我不認為他會準時到這里。
To know everything is to know nothing.
樣樣通，樣樣松。