Knopite
铈钙钛矿(钛酸钙矿夹杂氧化铯及氧化铁)
🗣️ 情景例句
Why, I didn't know that your grandfather was born in Germany.
你看 我竟然不知道您的爷爷出生在德国。
The daily rate is $32.00 plus 39 cent per mile.
日租金32美元，每英里外加3角9分。
Are these bags heavy? No, they're light.
不，是轻的。