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1. The discovery of the mastodon has shed light on the evolution of our ancestors.
发现猛犸象揭示了我们祖先的进化历程。
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2. The mastodon was a large, herbivorous mammal that lived in North America during the Pleistocene era.
猛犸象是一种大型的食草哺乳动物，生活在北美的更新世时期。
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3. The mastodon's extinction is often cited as evidence of the rapid climate change that led to the end of the Ice Age.
猛犸象的灭绝常被引用为导致冰河时代结束的快速气候变化的证据。