It could be those differences that they experience in their extracellular environment that lead to their choice to either self-renew or to become committed.

有可能就是由于,这种细胞外环境的不同,最终导致它们自我更新,或者成为定向的祖细胞

耶鲁公开课 - 生物医学工程探索课程节选

The focus of pleasure shifts to the genitals and fixation can lead to excessive masculinity in females or in males, or, if you're female, need for attention or domination.

性器官成为了快乐的主要来源,固着在此阶段，会导致女性或男性,过分男性化，或是导致女性产生对于关注或控制的欲求。

耶鲁公开课 - 心理学导论课程节选