名词
中文翻译：化石茎
同义词：
['fossil twig', 'fossil branch例句：1. The fossil stem is a rare and valuable resource for paleontologists.（化石茎是古生物学家稀有而宝贵的资源。）2. The fossil stem was discovered in the deserted cave.（在废弃的洞穴中发现的化石茎。）']
例句：
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1. The fossil stem is a rare and valuable resource for paleontologists.
化石茎是古生物学家稀有而宝贵的资源。
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2. The fossil stem was discovered in the deserted cave.
在废弃的洞穴中发现的化石茎。
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3. The fossil stem is believed to have been used by ancient humans as a tool.
据信古代人类曾用化石茎作为工具。