Trihydrocalcite
三水碳酸钙
🗣️ 情景例句
Mr. Malcolm Stewart, and it looks like a personal letter.
Malcolm Stewart先生收 ，而且看来是一封私人信件。
Children enter school at the age of five,don't they?
孩子们在5岁时入学吗？
But he added music, which he wrote himself.
但是他给影片配上了他自己创作的音乐。