Now, it's been assumed that primates and some other mammals stood alone at the top of the hierarchy of cognitive evolution.(现在，人们默认灵长类动物和其他一些哺乳动物独自站在认知进化等级的顶端。)
Notice that there is a hierarchy here.(请注意，这里有一个层次结构。)
Today's lecture is about Abraham Maslow's hierarchy of needs.(今天的课程是关于亚伯拉罕·马斯洛的需求层次理论。)
Figure 1 shows the number hierarchy.(图1显示了这个数值层次结构。)
What follows is the top level of this hierarchy of needs.(紧接着的是需求等级中的最高等级。)
A hierarchy forms.(层级结构形成了。)
In other words, there is a hierarchy of hormones.(换句话说，荷尔蒙是有层次的。)
Digital technology also makes it easier for people to co-ordinate their activities without resorting to hierarchy.(数字技术也使人们更容易协调他们的活动，而不用诉诸等级制度。)
