Bultfonteinite
氟硅鈣石
??? 情景例句
Please sit down, Alexandra.
請坐 Alexandra。
I have some shirts to send to the laundry.
我有一些襯衫送到洗衣店了。
Her first impulse was to go round all the rooms looking for the thieves,
她第一個條件反射是各個房間搜尋一下竊賊，