但它也可能自成一类。

But it is just as likely to be sui generis.

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它在益于皮肤健康的饮食中自成一类，占有重要的一席之地。

This beverage deserves a category all its own in any article about foods for healthy skin.

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最后，非常稀有而强大的灵能物品自成一类：神器。

Finally, psionic items exist of such rarity and power as to belong to a category of their own: artifacts.

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真有象音乐那样自成一类的语言？或者说存在着除非消亡否则将永远无法彼此沟通的孤立的语言？

Does language really exist in the singular, like music, or are there only languages which must remain permanently foreign to each other, as long as they survive at all?

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至于其重要性，古菌群在最开始被认定为自成一类时，也被视为无关紧要——但是它们释放甲烷的特性现在已被纳入气候变化的考察因素。

As to importance, when originally identified as distinct, the archaea, too, were regarded as marginal-yet their methane-generating properties are now a factor in climate-change calculations.

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至于其重要性，古菌群在最开始被认定为自成一类时，也被视为无关紧要——但是它们释放甲烷的特性现在已被纳入气候变化的考察因素。

As to importance, when originally identified as distinct, the archaea, too, were regarded as marginal-yet their methane-generating properties are now a factor in climate-change calculations.

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