Dennisonite
(=davisonite)板磷鈣鋁石
??? 情景例句
Mr. Lu, we are very pleased to be able to offer this product to you.
陸先生，我們很高興能提供這個產品給您。
No.
不。
When Aunt Huang came back, I was so tired. In the evening Liu Ming came to see me.
當黃阿姨回來的時候，我累極了。晚上劉明來看我。