n.二氧化物
The carbon14 atoms oxidize to carbon dioxide which gets blown about and mixed up with lower atmosphere. 碳14原子氧化生成二氧化碳，向四周散去并与低空的大气混合。
Plants can absorb carbon dioxide and release oxygen. 植物可以吸收二氧化碳释放氧气。
Acid rain is caused by sculptures dioxide spewed from factories and power plants. 酸雨的形成是从工厂和发电厂被排放的二氧化物引起。
