cardinal sin

英 [ˌkɑːdɪnl ˈsɪn]

美 [ˌkɑːrdɪnl ˈsɪn]

n.  严重过失; 过错; (基督教中严重的)罪，罪孽

牛津词典

noun

• 严重过失；过错
  an action that is a serious mistake or that other people disapprove of
  1. He committed the cardinal sin of criticizing his teammates.
     他犯了指责队友的大错。
• （基督教中严重的）罪，罪孽
  a serious sin in the Christian Church

柯林斯词典

• N-COUNT 重罪;最不可饶恕的事;严重过失
  If you describe an action as acardinal sin, you are indicating that some people strongly disapprove of it.
  1. I committed the physician's cardinal sin: I got involved with my patients.
     我犯了从医的大忌:跟病人有了感情纠葛。

双语例句