名词
中文翻译：Unknown
同义词：
['sample test', 'trial specimen', 'test specimen']
例句：
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1. The engineer tested the new machine before it was put into production.
工程师在机器投入生产前对其进行了测试。
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2. The scientists conducted a series of tests on the new drug to ensure its effectiveness.
科学家们对新药进行了一系列的测试，以确保其有效性。
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3. Before releasing the product, the company conducted several test samples for quality control.
在产品发布之前，公司进行了几次测试样品以进行质量控制。