incestuous

例句：

1. 1.The couple's relationship was known for its incestuous nature.
   这对夫妇的关系以乱伦著称。
2. 2. The scandal surrounding the incestuous marriage led to a public outcry.
   围绕乱伦婚姻的丑闻引发了公众的强烈抗议。
3. 3.The law prohibits incestuous relationships between siblings.
   法律禁止兄弟姐妹之间的乱伦关系。