Thomasite
磷硅铁钙石
🗣️ 情景例句
He speaks French and English with equal ease.
他说法语和英语都一样自如。
Sleep well.
祝您睡好。
I'm sorry, I can't. Is it under the teacher's desk?
对不起，我没见过，是不是在老师的讲桌底下？