[ fùtāngdàohuǒ ] go into boiling water and walk [step] on fire -- to undertake a matter fearlessly and vigorously in the interest of a cause or on behalf of a friend; defy all difficulties and danger; leap into a boiling cauldron or a blazing fire; go [get] through fire and flood [water]; take all risks; jump into hot water or walk through fire; brave fire and flood; defy danger and death; charge [go] through fire and water; (be ready to) plunge into a raging fire and boiling water; go through a severe ordeal or sorrowful experience; go through the baptism of fire; go through thick and thin 短语和例子 他英勇对敌, 不避艰险, 赴汤蹈火在所不计。 he faced the enemy valiantly, shuned no difficulties and dangers and would not hesitate to lay down his life if need be