Calsil
硅酸钙盐
🗣️ 情景例句
Brown was friendly and easy-going.
布朗待人友善。
What do you think of the proposal?
你的看法如何？
What a delicious supper! Next time you must come to us.
多好吃的一顿饭呀！下次你要到我们家作客啊！