一条巨蟒，被认为是恐龙消失时在陆地上行走或至少滑行的顶级捕食者。
A titanic snake has been identified as the top predator to walk, or at least slither, the land when the dinosaurs disappeared.
因此，能够在陆地上行走更远的动物，生存的机会就更大。
Thus, individuals able to travel greater distances over land had a better chance of survival.
一些恐龙在陆地上行走，一些在空中飞行，一些在湖里游。
Some dinosaurs walked on the land, some flew in the Earth and some swam in lakes.
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