mindlessly
adverb /ˈmaɪndləsli/
  /ˈmaɪndləsli/
(disapproving)- without thought and for no particular reason or purpose没头脑的;无谓的;盲目的 - There is no excuse for mindlessly destroying public property.盲目破坏公共财产是没有借口的。 
 
- There is no excuse for mindlessly destroying public property.