Kolbeckite
水磷硅铍钪石, 硅磷钪石
🗣️ 情景例句
What beautiful timing.
时间正合适。
It is our permanent principle that contracts are honored and commercial integrity is maintained.
重合同、守信用是我们的一贯原则。
I tried to make conversation.
我试图找个话题和她聊聊。