The second form is reciprocal altruism, or “you scratch my back and I'll scratch yours”.
另一种形式则是互惠型的利他行为，或称为“狼狈为奸，唯利是图”。
This paper utilizes the Reciprocal Law Two Times to prove that the rational number of a kind of form is not the integer, and proves that the number of another kind of prime is limitless.
利用二次互反定律证明了某类形式的有理数不是整数，并且证明了某类形式的素数的个数是无限的。
The second form is reciprocal altruism, or "you scratch my back and I'll scratch yours".
第二种形式是互惠的利他主义，或者说“你帮我搓背我也帮你搓背”。
Therefore, the research on how to keep good trade relationships so as to form the reciprocal trade has been the hotspot, which is many scholars' concern.
为此，研究两国如何保持良好的贸易往来，达到互惠互利，已成为许多学者关注的热点。
The complete reciprocal movement of four points is a special teaching form of distribution approach in class.
四点完形互动是布点法特有的课堂教学形式。
The complete reciprocal movement of four points is a special teaching form of distribution approach in class.
四点完形互动是布点法特有的课堂教学形式。
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