pounce on something   
phrasal verb with pounce verb [ I ] uk/paʊns/ us/paʊns/
  (CRITICIZE)      
  立即批评(错误)
to immediately criticize a mistake
  He knows that his critics are waiting to pounce on any slip that he makes. 他知道他的批评者们正等着揪住他的任何差错。 
   (ACCEPT)      
 欣然接受
to accept something quickly and with enthusiasm
  I think if she were given the opportunity to work here, she'd pounce on it. 我觉得如果给她机会在这里工作,她会欣然接受的。