demean by

• 因…而降低身份(或损坏人格)，因…而使自己丢脸：

  I will not demean myself by cheating on the examination.

  我不会因考试作弊而使自己丢脸。

  Don't demean yourself by doing anything dishonourable.

  不要做出任何不光彩的事情而有失自己身份。

  to demean oneself by taking a bribe

  因受贿而贬低了身份