Some of the Amazon's animals are dangerous, such as the anaconda, the largest snake in the world.
2
探索者已经发现了迄今为止世界上最大的蛇化石，证明了这里以前是热带气候。
Researchers have found fossils of the biggest known snake in the world, a discovery that could shed light on the climate of the tropics in the past.
3
这些庞然大物生活在哥伦比亚东北部，现存的世界上最大的蛇和水蟒超不过6-6.5米。
The giant, found in northeastern Colombia, dwarfs modern pythons and anacondas which usually don't exceed 6-6.5 metres and are thought to be the largest living snakes.
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