名词
中文翻译：测试面
同义词：
['test subject', 'test object', 'test specimen']
例句：
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1. This is the first time we have tested this new product on a large scale.
这是我们第一次大规模测试这款新产品。
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2. The scientist conducted a series of tests on the sample to ensure its quality.
科学家对样本进行了一系列的测试，以确保其质量。
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3. The company is currently testing a new software version for its customers.
该公司目前正在为顾客测试一个新的软件版本。