【鞭长莫及】〖bin cháng mò jí〗[be beyond one's grasp; beyond one's ability to; beyond the reach of one's power; cannot do it, much as one would like to]

鞭笞天下美谍潜，

长驱直入厂遍建。

莫此为甚官腐透，

及溺呼船为时晚。