The ammonia oxidation test was made under the mixed atmosphere of NO2/O2. Ammonia oxidizer could use NO2 as electron acceptor to oxidize ammonia and produce NO when there was no molecule oxygen.

在NO2/O2混合气氛下进行氨氧化试验，结果表明，无分子氧时，氨氧化菌能以NO2为电子受体氧化氨，并产生NO；

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So, if we compare the sulfur to the oxygen, the oxygen it turns out is more electronegative and that is what holds the negative charge in this molecule.

因此，如果我们来比一下硫和氧，氧应该有更高的电负性,而在这个分子中它确实有负的电荷。

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Ozone is a version of oxygen with three atoms per molecule, whereas normal, everyday oxygen has only two.

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The dots that make up the figures in the movie are the oxygen atoms in the molecule, Heinrich said.

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That could cause the oxygen to become liberated from water molecule and turned into a gaseous form.

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