不费吹灰之力
英文解释:
  1. n.  effortlessly; as easy as to blow away the dust; with the slightest effort
  2. n.  Effortlessly
  3. n.  as easy as to blow away the dust
  4. n.  with the slightest effort
  5. n.  as easy as blowing off dust - not needing the slightest effort
法文解释:
  1. adv.  sans le moindre effort, C'est aussi facile que de souffler la poussière