Chevkinite
硅钛酸铈钇矿
🗣️ 情景例句
Thanks.
谢谢。
I'm sorry, but it's just not possible.
抱歉，实在是爱莫能助。
but I lacked for nothing, for he was both father and mother to me.
但我却什么都不缺，他既当父亲又当母亲。