绝对共栖的案例可能很少，因为其中一方不太可能完全不受影响。
Few cases of absolute commensalism probably exist, because it is unlikely that one of the partners will be completely unaffected.
有些种类的组合几乎是共栖的形式。
Some associations of species are almost a form of commensalism .
有些种类的组合几乎是共栖的形式。
Some associations of species are almost a form of commensal ism.
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