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]

力有未逮指能力做不到。[查看详情]

心余力绌犹心有馀而力不足。心里很想做但力量够不上。[查看详情]

鞭长莫及本意为马鞭虽长但打不到马肚子上。喻虽有力力量亦达不到。例虽鞭之长，不及马腹。——《左传宣公十五年》英although the whip is long,it does not reach the horse's belly——cannot do it much as one would like do;后用以喻力不能及。亦作“鞭不及腹”[查看详情]

无能为力用不上力量也指无力相助或力量达不到。例人对于自然界不是无能为力的。英powerless; can do nothing about it;[查看详情]

独木难支一根木头支持不住大厦比喻一个人的力量难以支撑全局。例独木难支大厦倾。——明赵弼《蜀三忠传》英one log cannot prop up a tottering building; (fig) one person alone cannot cave the situation;[查看详情]