had we not done something remarkable. 我们的故事原本可能非常短暂

251. and become the world's most dangerous predator.
     成为世界上最危险的捕食者
252. While our rise contributed to the global extinction of large land animals,
     尽管我们的崛起导致 大型陆地动物在全球灭绝
253. our story could have been a short one
     但如果表现不够出色
254. had we not done something remarkable.
     我们的故事原本可能非常短暂
255. We freed ourselves from the uncertainty of a hunter-gatherer existence
     我们通过与大自然结盟
256. by forming alliances with nature.
     摆脱了狩猎和采集的不确定性
257. The stable climate of the Holocene
     全新世稳定的气候

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 254 行