This was a landscape where antelope of all kinds abounded—along with bos primigenius, a kind of oxen that has become extinct.

这是一片充满了各种羚羊的土地——还有原牛，一种已经灭绝的牛。

Under these circumstances, archaeologist Andrew Smith believes, the small herds of bos primigenius in the desert became smaller, more closely knit breeding units as the drought took hold.

考古学家安德鲁·史密斯认为，在这些情况下，随着干旱的持续，沙漠中较小的原牛群会变成更小、联系更加紧密的繁殖单位。

bos listusers lists all such users from the UserList file.

bos listusers列出了来自userlist文件的所有这类用户。