mortal sin
noun [ C usually singular ] uk/ˌmɔː.təl ˈsɪn/ us/ˌmɔːr.t̬əl ˈsɪn/
（天主教中的）弥天大罪
in the Roman Catholic religion, an action that is so bad that you will be punished for ever after your death if you do not ask God to forgive you
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。