名词
中文翻译：限制领域
同义词：
['boundary', 'scope', 'sphere']
例句：
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1.The company has limited its product line to only three models.
该公司已将产品线限定为仅三种型号。
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2.The research team is working on a project that limits the field of study.
研究团队正在开展一个项目，该项目限定了研究的范围。
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3. The new policy limits the field of employment opportunities for unskilled workers.
新政策限定了非熟练工人的就业机会范围。