What is about 20% of the air?

学习 时间:2026-09-29 14:30:32 阅读:158
What is about 20% of the air?快要答案不要翻译,谢谢 about one fifth of the air is oxygen about four fifths of the air is nitrogen. 两句话帮忙也翻译一下吧,谢谢

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调皮的烤鸡

成就的宝马

2026-09-29 14:30:32

oxygen