Two part hydrogen, one part oxygen, you'll get water every time.
两份氢，一份氧，获得的总是水。
This gas is two parts hydrogen and one part oxygen.
这种气体是两部分氢气和氧气的一部分。
Hydrogen peroxide is a part of the oxygen reduction pathway, produced by the two-electron reduction of molecular oxygen, or by the one electron reduction of superoxide anion radical.
过氧化氢是氧还原途径的产物，由分子氧双电子还原或者超氧阴离子自由基单电子还原产生。
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