Comendite
[化] 钠闪碱流岩
🗣️ 情景例句
that will bring parents and teachers together once a week
让家长们及教师每星期一次
In Britain, there are open universities.
在英国，有成人大学。
you will realize that a modern navy is a good place to study noise.
你就会认识到现代海军是研究噪音的好地方。