Before the apocalypse, 在大灾变之前

111. was a type of dinosaur.
     是一种恐龙
112. More specifically, an avian dinosaur...
     更具体地说 是一种禽类恐龙
113. otherwise known as the birds.
     又名“鸟类”
114. Before the apocalypse,
     在大灾变之前
115. there had been hundreds of ancient species living in the trees,
     树上居住着数百种古老的物种
116. all wiped out when the forests burned.
     森林被烧毁时 全部灭绝
117. But a handful of ground-dwelling birds did make it through.
     但少数栖息在地面上的鸟类 幸存了下来

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 114 行