名词
中文翻译：主要的
同义词：
['primary', 'chief', 'principal']
例句：
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1. The main reason for the delay was due to the heavy traffic.
延误的主要原因是由于交通拥堵。
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2. The main goal of the project is to improve efficiency.
项目的主要目标是提高效率。
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3. Maintaining good health is the main priority for everyone.
保持健康是每个人的主要优先事项。