形容词
中文翻译：主要的
同义词：
['first', 'primary', 'chief例句：1. The primary focus of the project is to improve efficiency.（该项目的首要目标是提高效率。）2. The primary function of this device is to power up.（这个设备的主功能是供电。）']
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 function of this device is to power up.
这个设备的主功能是供电。
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3.The primary reason for the delay was a technical glitch.
延误的主要原因是一个技术故障。