名词
中文翻译：活化石
同义词：
['living relic', 'living dinosaur']
例句：
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1.The discovery of the ancient tree is a living fossil that tells us about the early days of life on Earth.
发现这棵古老的树是活生生的化石，它告诉我们关于地球早期生命的故事。
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2. The discovery of this species has provided scientists with a living fossil to study the evolution of life.
这种物种的发现为科学家提供了活生生的化石，以研究生命的进化。
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3. This animal is considered a living fossil because it has been around for millions of years and still looks much like its ancestors.
这种动物被认为是活生生的化石，因为它已经存在了数百万年，并且外观与它的祖先非常相似。