the act of removing parts of a piece of writing that are considered likely to cause offence, or a piece of writing that has had parts removed like this

The publication now undergoes a great deal of expurgation. 该出版物现在经历了大量的删改。

Thomas Bowdler published expurgations of Shakespeare for family reading. 托马斯•鲍德勒出版了供家庭阅读的莎士比亚作品删节版。