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寸草:小草;春晖:春天的阳光。小草微薄的心意报答不了春日阳光的深情。比喻父母的恩情,难报万一。
[parents love can hardly be reciprocated by their children] 指亲恩之重,有如春晖,子女虽尽全力,亦不足以报效万一