我家里常用的锌含化糖片确实有些效果，这个现象也提醒了我，我们人类确实是一个很容易被骗到的种族。
And I was disabused of the notion that the zinc lozenges that my family has always used actually had some effect.
相比之下，虽然巴西人会在北部跳弗乐，在南部跳森巴，但他们的种族分布均匀，同说一种语言，1.9亿人口生活在同一片广阔的大地上。
By comparison, Brazilians may dance the forró in the north and the samba in the south, but theirs is a pretty homogeneous and monolingual country of 190m, all on one land mass.
当然我们也可能是银河系星际生态系统的一份子，在这个大型的生态系统里，我们与其他文明种族在同一片星空下争夺资源、谋求进化。
Likewise, we could belong in a galactic ecosystem, where alien civilizations compete for resources, co-exist and evolve accordingly.
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