Copperiioxide
[化] 氧化铜
🗣️ 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。
It's raining.
外面下着雨。
Jim, who's that woman?
吉姆， 那个女的是谁？