Knopite
铈钙钛矿(钛酸钙矿夹杂氧化铯及氧化铁)
🗣️ 情景例句
I take care of both to the best of my ability.
我尽我所能把两方面都照顾好。
What are you doing?
你在干什么？
Excuse me! Are you Mr. Green?
请问，您是格林先生吗？