O-r system
[医] 氧化还原系
🧩 词语组成解析
🗣️ 情景例句
Are you a citizen of the People's Republic of China?
你是中华人民共和国的公民吗？
Mother doesn't approve of her smoking.
母亲不赞成她吸烟。
Yes, it is.
是的。