弗洛伊德认为，俄狄浦斯情结是儿童心理发展的一个重要阶段。

Freud believed that the ___Oedipus complex is a crucial stage in a child's psychological development.

俄狄浦斯的故事展示了命运的残酷和人类的无知。

The story of ___Oedipus illustrates the cruelty of fate and human ignorance.