Waltherite
砷铀铋矿
🗣️ 情景例句
Great! Let's do it!
好。 我们去。
Yes, she lives just across the street.
是的，她就住在街对面。
There's no time! laughed Mother.Here are the twins.
“没时间了！”母亲笑着说，“双胞姐妹到了。”