「一血」是什么意思？

第一滴血，通常指游戏中的第一个人头。比如在Dota中，首次击杀英雄时游戏会播放“First Blood”的音效。也可以引申到各种竞技活动中第一次完成目标。

ENFirst blood, usually refers to the first kill in a game. For example, in Dota, when a hero is killed for the first time, the game will play a 'First Blood' sound effect. It can also be extended to mean the first time a goal is achieved in various competitive activities.