形容词
中文翻译：次级的
同义词：
['substandard', 'inferior', 'unqualified']
例句：
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1.The product is sub-standard, which affects our quality assurance.
产品不达标，影响了我们的质量保证。
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2. The company's sub-standard service has led to customer dissatisfaction.
公司的次级服务导致客户不满意。
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3. The sub-standard workmanship of the construction site has caused delays in the project.
施工现场的次级工作质量导致项目延误。