fraternal

adj.兄弟的；兄弟般的；[生]异卵双生的

We'll do all we can to step up our aid to our fraternal countries. 我们将尽力加强对兄弟国家的援助。

In other words, their senses of what was fair were similar.No such correlations were seen in the behaviour of fraternal twins. 换句话说，他们的公平感是很相似的，而在异卵双生的双胞胎中就没有发现这样的关系。