Ralstonite
氟钠镁铝石
🗣️ 情景例句
Yes, we are surprised to meet you here.
是的，我们意外在这儿见到了你。
Have you got that?
你明白我的意思吗？
It's about four hundred yards down this street.
城堡就在这条街上，（离这儿）400码左右。