In fact, bonobo promiscuity seems to be an example of this.事实上倭黑猩猩的混交行为便是佐证.Most likely a primate similar to the Bonobo was the first to laugh.类似于巴诺布猿的某种灵长类可能是最先发出笑声的动物....

bonobo的音标：bonobo的英式发音音标为：[bɒ'nəʊbəʊ]bonobo的美式发音音标为：[bɒ'noʊboʊ]...

n.（产于非洲刚果河以南的）倭黑猩猩[源自非洲当地语]...