形容词
中文翻译：主要的
同义词：
['primary', 'chief']
例句：
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1.The primary goal 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 hard work.
他们成功的主要原因在于他们的努力工作。
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3. The primary focus of the meeting was on the budget.
会议的主要焦点是预算。