Agustite
磷灰石
🗣️ 情景例句
I'm writing a story for the high-school paper.
我正在为高中校刊写一篇东西。
Last month was December,wasn't it ?
上个月是十二月，对不对？
We've arranged our schedule without any trouble.
我们已经很顺利地把活动日程安排好了。