形容词
中文翻译：主要的
同义词：
['primary', 'fundamental', 'primary importance例句：1. The primary focus of the project is to improve efficiency.（该项目的主要目标是提高效率。）2. The primary function of this device is to control temperature.（这台设备的主要功能是控制温度。）']
例句：
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1. The primary focus of the project is to improve efficiency.
该项目的主要目标是提高效率。
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2. The primary function of this device is to control temperature.
这台设备的主要功能是控制温度。
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3. The primary reason for their success was their innovative approach.
他们成功的主要原因在于他们的创新方法。