形容词
中文翻译：Unknown
同义词：
['approved', 'authorized', 'guaranteed']
例句：
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1. The company is certified by the government.
该公司得到了政府的认证。
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2. The product is certified to meet international standards.
该产品已通过国际标准认证。
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3. The certificate was issued by a reputable organization.
该证书是由一个有信誉的组织颁发的。