形容词
中文翻译：主要的
同义词：
['first', 'foremost', 'chief']
例句：
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1. Theprimary goal of the project is to reducecarbon emissions.
该项目的首要目标是减少碳排放。
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2. Theprimary reason for his absence was a suddenillness.
他缺席的主要原因是一个突发的疾病。
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3. Theprimary focus of the research was on developingnew materials.
研究的主要焦点是开发新材料。