在阈限阶段，共同体作为一种自发的、直接的和平等的人际关系出现。

The brain has specialized networks for maintaining alertness, orienting to sensory events, and resolving conflict among responses.

The novel is a protest against the irreversibility of time.

在一个人口过度拥挤的世界里，人们不太愿意接受他人的多样性，更容易将他人视为对自身身份的威胁。