形容词
中文翻译：劣质的
同义词：
['substandard', 'inferior', 'poor quality', 'inferior quality']
例句：
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1. This product is of substandard quality.
这个产品的质量很差。
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2. The company's products are known for their inferior quality.
这家公司的产品以质量低下而闻名。
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3. The poor quality of the materials used in this project was a major concern.
项目所用材料质量差是一个主要问题。