见到兔子，急忙唤狗去追捕。比喻及时补救，为时未晚。语本《战国策・楚策四》：“见兔而顾犬，未为晚也；亡羊而补牢，未为迟也。”亦作“见兔呼狗”。
英语 take measures in time（it is not yet too late to take advantage of an opportunity that comes only once in a long time）
