求翻译：按照社会交换理论的说法，关系就是以“互惠”为基础的。互惠不仅体现在有形的利益方面，还体现在无形的信任和承诺等方面。比如，当A帮了B一个忙之后，相当于A对B进行了感情方面的投资，B欠A一个人情。也许不是现在，而是之后的某一时刻，当A遇到困难时，B也会帮助A。是什么意思？

Statement in accordance with social exchange theory, the relationship is "mutual" basis. Reciprocity is reflected not only in terms of tangible benefits, but also reflected in the intangible of trust and commitment. For example, when a help a favor b, which is equivalent to a b emotional investment,

In accordance with the social exchange theory, the relationship is mutually beneficial to the "basis" for the. Mutually beneficial not only embodied in tangible benefits, but also in the invisible trust and commitment. For example, when doing the A B after a busy, is equivalent to A B to the emotion

Exchanges the theory according to the society the view, the relations is take “the reciprocal benefit” as the foundation.Not only the reciprocal benefit manifests in the visible benefit aspect, but also manifests in invisible aspects and so on trust and pledge.For instance, after A has helped B one

In accordance with the social exchange theory, is to "reciprocal" basis. Mutually beneficial not only in terms of tangible benefits, trust and commitment is also reflected in the invisible, and so on. For example, when a helps b after a busy, emotional investment in is equivalent to a b, a b owes a

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