中英成语俚语800对021：鞭长莫及

　　鞭长莫及

　　Beyond one's grasp.

　　Out of reach.

　　eg：I cannot help him because it is beyond my grasp.

　　中英俚语俗语来源：左传：“虽鞭之长，不及马腹。”

　　同义词：远水不救近火 Water afar off quencheth not fire.

　　反义词：信手拈来 Come in handy.