名词
中文翻译：样本
同义词：
['sample', "specimen例句：1. The engineer needs to test the new machine's master sample before production begins.（工程师需要在生产开始前测试新机器的样本。）"]
例句：
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1. The engineer needs to test the new machine's master sample before production begins.
工程师需要在生产开始前测试新机器的样本。
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2.The museum has collected a variety of master samples from around the world.
博物馆收集了来自世界各地的各种样本。
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3.The scientist used the master sample to study the chemical properties of the substance.
科学家使用这个样本研究物质的化学性质。