These enzymes act to disproportionate two molecules of superoxide anion to hydrogen peroxide and water, and plays important role in extreme environment adaptation of Antarctic microorganism.

它是唯一以超氧阴离子自由基为底物的酶，可以催化超氧阴离子的歧化反应产生分子氧和过氧化氢，在南极细菌对恶劣环境的适应中具有重要作用。

youdao

Hydroxide: Any compound with one or more functional groups made up of one atom each of hydrogen and oxygen, Bonded together and acting as the hydroxide anion (OH -).

氢氧化物：包含一个或几个由一个氢原子和一个氧原子组成的官能团的化合物，氢和氧原子键合在一起以氢氧基团或氢氧阴离子(OH -)的形式起作用。

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The hydrogen bond on the complanate triangle structure of thiourea, a kind of neutrality substance, can be the identification point to anion.

硫脲作为电中性物质，其平面三角形的极性氢键可作阴离子的识别位点。

youdao

So, for example, just talking about hydrogen cyanide or the cyanide anion, these are both molecules which are used in organic synthesis, so particularly the cyanide anion and salts of the cyanide anion.

那么，比如，就拿氰化氢,或者氰离子来说，它们都是用于有机合成的分子，特别是氰离子和氰离子的盐。

麻省理工公开课 - 化学原理课程节选