Copperiioxide
[化] 氧化铜
🗣️ 情景例句
What type of visa have you got?
您持的是哪种签证？
Fill it up with unleaded and check the oil,please.
请加满不含铅的汽油，并检查一下机油。
CUSTOMS OFFICER: Are you tourists?
你们是来旅游的吗？