四川联合专修学院航拍:who can tell me?

来源：百度文库 编辑：中科新闻网 时间：2024/05/11 12:33:54
谁可以告诉本人 屁的化学式是什么呀
除了用屁股制造以外 还有什么方法可以制屁啊？

NH4
可以去厕所收集啊

你自己不就在放洋屁啊

甲烷

很多方式呀～～～

呵呵 你居然可以 想出这个问题那肯定可以回答这个问题

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