當仁不讓（當仁不讓）　

◎ 當仁不讓 dāngrén-bùràng

[not decline to shoulder a responsibility;in good cause do not lag behind;take sth. as one‘s obligation] 當:面對。仁:正義之事?！墩撜Z·衛(wèi)靈公》:“當仁不讓于師。”后以“當仁不讓”表示應(yīng)做之事,就應(yīng)積極主動去做,不能推托

夫人臣依義顯君,竭忠彰主,行之美也,當仁不讓。——《后漢書·曹褒傳》