An adult female keeps a keen watch. 一只成年雌性在警惕地观察

262. In the clearing, a herd of early mammals graze.
     空地上 一群早期哺乳动物在吃草
263. Theosodon,
     滑距貘
264. about the size of a modern-day llama.
     大小与现代美洲驼相仿
265. An adult female keeps a keen watch.
     一只成年雌性在警惕地观察
266. But she hasn't seen...
     但它没有看到…
267. the terror bird.
     骇鸟
268. With a head like a pickaxe and standing two and a half meters tall,
     骇鸟的头像锄头 站立高达2.5米

来自《我们星球上的生命 第一季 第六集 Life on Our Planet S01E06 灰烬中重生》第 265 行