名词
中文翻译：标准标本
同义词：
['standard specimen', 'model specimen']
例句：
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1. The museum has a collection of rare fossils as its main exhibit.
博物馆的主要展品是稀有化石。
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2. This is the first time we have seen this species in the wild.
这是我们第一次在野外看到这种物种。
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3. The researcher used a cast model to study the structure of the bone.
研究者用石膏模型研究骨骼结构。