形容词
中文翻译：主要的
同义词：
['primary', 'chief', 'foremost']
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 his success was his hard work.
他成功的主要原因是他的勤奋工作。
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3. The primary color of the dress is red.
这件衣服的主要颜色是红色。