each one wiping out more than three-quarters of all life. 每一次都消灭了四分之三以上的生命

307. we are doing it at meteoric speed.
     我们做得极快
308. Although rare, mass extinctions change the course of history like nothing else.
     大规模灭绝虽然罕见 但会极大地改变历史的进程
309. So far, Earth has endured five of these apocalyptic events,
     到目前为止 地球已经经历了五次这样的末日事件
310. each one wiping out more than three-quarters of all life.
     每一次都消灭了四分之三以上的生命
311. What's more,
     而且
312. the dominant species going in
     事件前的主导物种
313. are not the dominant species coming out.
     在事件之后 往往威风不再

来自《我们星球上的生命 第一季 第八集 Life on Our Planet S01E08 冰与火的世纪》第 310 行