Montmartrite
[礦]灰性石膏
??? 情景例句
You know something?
知道嗎？
Please be serious for a minute, this is very important.
請嚴肅點，這件事很重要。
Oh, and by the way, my wife wants to know if Mary needs any help.
喔，順便問一問，我妻子想知道瑪麗是否需要幫忙。