Calcium sillicate
[机] 硅酸钙
🧩 词语组成解析
🗣️ 情景例句
Your letter filled me with great vitality.
读了你的信之后我感到充满活力。
Open your books and turn to page 20.
打开书，翻到第20页。
How much cloth does it take to make a skirt for the girl?
女孩做一条裙子要用多少布？