Knopite
铈钙钛矿(钛酸钙矿夹杂氧化铯及氧化铁)
🗣️ 情景例句
Right. What's old?
对了， 旧的东西是什么？
I told him to come in for a few minutes.
我告诉他进来等几分钟。
Don't close the window, Jim.Is he closing the window, Lily?
吉姆请不要把窗户关上。莉莉，他在关窗吗？