taste blood
尝到甜头；获得成功的滋味；开始有动力或信心继续做某事
口语·描述成功激励
英文释义
to experience success or victory and become motivated to achieve more
例句
After winning his first race, he tasted blood and trained even harder.
典故来源
源自狩猎或战斗场景，动物或人尝到血腥后更兴奋，比喻初尝成功后渴望更多。