Kalimagnesia
含水硫酸鉀鎂
??? 情景例句
Are you being waited on?
您需要服務嗎？
Perhaps I can sneak out of the classroom unnoticed.
也許我可以神不知鬼不覺地溜進教室。
It repeated these circles over and over again.
它首先向右飛一個圓圈，然后向左飛一個圓圈。