Photoxide
光氧化物
🗣️ 情景例句
He graduated from medical school in 1960
他在一九六零年从医学院毕业，
He was lucky to have a good home in which to grow up.
他幸运地生长在良好的家庭里。
Excuse me. May I have a piece of paper, please?
请问，我可以要一张纸吗？