Leightonite
[矿]钾钙铜矾
🗣️ 情景例句
He bites off more than he can chew.
贪多嚼不烂。
How do you do?
你好！
I'm afraid that he'll forget it if he misses so many lessons. He may even fail his Chinese exam.
如果他再缺这么多课，恐怕他会忘记很多的。他的汉语考试甚至会不及格。