Copperiioxide
[化] 氧化铜
🗣️ 情景例句
What does that mean when he goes,
他发出的声音代表什么意思
Last year, he applied to Harvard University for a scholarship and succeeded in passing a difficult examination.
去年，他向哈佛大学申请奖学金并通过了一个很难的考试。
Put them away, please. You must look after your things.
把他们放好。你得能看好自己的东西。