中英成语俚语800对043：不入虎穴，焉得虎子
不入虎穴，焉得虎子 Nothing venture, nothing have(gain). No pains, no gain.
eg：Go and ask your boss to give you a promotion. Nothing venture , nothing have.
中英俚语俗语来源：后汉书·班超传：“班超使西域，谓其官属曰，不入虎穴，不得虎子。”