名词
中文翻译：Unknown
同义词：
['strict line', 'strict boundary']
例句：
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1. The company has set a stern line on advertising in its products.
该公司对产品广告设定了严格的限制。
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2. The new policy will have a stern line on environmental protection.
新政策将对环境保护设定严格的限制。
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3. The team needs to maintain a strict line between work and personal life.
团队需要在工作中和个人生活中保持严格的界限。