Fluooxycolumbate
氟氧铌酸盐
🗣️ 情景例句
I'm delighted to make your acquaintance.
认识你我觉得非常高兴。
Is the coastal plain good for farming?
沿海的平原对耕作有好处吗？
Hello, Jim! Did you have a good time at the cinema?
你好，吉姆！你在电影院过得很开心吧？