In other words, our inner caveman is continually looking over his shoulder to see what the rest of the tribe are up to.
出自-2015年12月阅读原文
柯林斯高阶英汉双解学习词典释义
N-COUNT-COLL
(尤指发展中国家的)部落,部族(一些人不赞成此用法)
Tribe is sometimes used to refer to a group of people of the same race, language, and customs, especially in a developing country. Some people disapprove of this use.