爱莫能助（愛莫能助）　

◎ 爱莫能助 àimònéngzhù

[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] 莫:没有谁,不能;助:帮助。虽然同情,但无力相助

我爱莫能助,请你好自为之吧