the largest land animals were disappearing. 最大的陆地动物正在消失

211. However, not everything thrived during the Holocene.
     然而并不是一切 都能在全新世兴旺发展
212. A strange and highly selective extinction was underway.
     一种奇怪且高度选择性的灭绝 正在进行之中
213. Across the planet,
     全球范围内
214. the largest land animals were disappearing.
     最大的陆地动物正在消失
215. Mammoths, cave lions, and hundreds of other species vanished.
     猛犸象、穴狮 以及数以百计其他物种消失了
216. North America was particularly hard-hit,
     北美尤其遭受重创
217. losing over 70% of its giants...
     失去了70%以上的巨兽

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 214 行