爱莫能助莫：没有谁不能；助：帮助。虽然同情但无力相助。例我爱莫能助请你好自为之吧。英be unable to help even for the sake of love; love but have no ability to help; willing to help but unable to do so;[查看详情]

力不从心心里想做但能力达不到。例今使者大兵未能得出如诸国力不从心，东西南北自在也。——《后汉书西域传》英ability falling short of one's wishes; ability not equal to one's ambition; lack the ability to do what one would like to do; the spirit indeed is will[查看详情]

鞭长不及亦作“鞭长不及马腹”。[查看详情]

望洋兴叹本义指在伟大的事物面前感叹自己的微小今多比喻想做一件事而又无能为力无可奈何。英lament one's littleness before the vast ocean -bemoan one's inadequacy in the face of a great task;[查看详情]