世界上最完美的電腦配備~貼心到你300天不用離開桌子!
Carbon dioxide - Wikipedia, the free encyclopedia要洗澡~要上廁所~要吃東西一應具全!!! Carbon dioxide (chemical formula CO2) is a naturally occurring chemical compound composed of two oxygen atoms each covalently double bonded to a single carbon atom. It is a gas at standard temperature and pressure and exists in Earth's atmosphere in this ...
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