Then, with the action of sunlight on cells containing chlorophyll, and other materials, chemical reactions occur, and oxygen is released.
然后，含有叶绿素等成分的细胞在阳光的照射下发生化学反应，产生氧气。
Steel and iron manufacturers also extensively use oxygen or oxygen-enriched air to affect chemical refining and heating associated with carbon removal and other oxidation reactions.
钢铁制造商还广泛使用氧或富氧空气来影响同除碳和其它氧化反应相联系的化学精炼和加热。
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