Knopite
铈钙钛矿(钛酸钙矿夹杂氧化铯及氧化铁)
🗣️ 情景例句
That's it.
就这样。
Whom will you invite to the wedding?
你将邀请谁参加婚礼？
My sister is only seven, but she always tells me whether my pictures are good or not.
我的妹妹只有7岁，但她总能说出我的画是好还是坏。