形容词
中文翻译：主要的
同义词：
['primary', 'primary-grade', 'primary-stage']
例句：
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1.The primary focus of the project is to improve efficiency.
该项目的首要目标是提高效率。
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2. The primary reason for their success was their teamwork.
他们成功的主要原因在于团队合作。
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3. The primary function of this tool is to analyze data.
这个工具的主要功能是分析数据。