An outlier is someone who is not common, not part of the common group, okay?

离群值是不常见的人， 不属于普通群体的人， 好吗？

In fact, the dicynodonts became the most common group of land vertebrates during the Triassic.

事实上，二齿兽类成为三叠纪最常见 的陆地脊椎动物群。

So, human-to-human transplants clearly involve lots of risks– but at least people share common blood groups and relatively similar immune systems.

因此，人与人之间的移植显然涉及很多风险，但至少人们拥有共同的血型和相对相似的免疫系统。

The most common groups victimized by these extremists are those who are black, Hispanic, or part of a multi-racial couple or family.

这些极端分子最常受害的群体是黑人、西班牙裔或多种族夫妇或家庭的一部分。

And these turned out to be the most common and diverse group of birds in the whole Mesozoic era, filling many of the same roles as modern birds.

事实证明， 这些鸟类是整个中生代最常见、最多样化的鸟类群，扮演着许多与现代鸟类相同的角色。