形容词
中文翻译：主要的
同义词：
['primary', 'fundamental', 'essential']
例句：
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1. The main reason for the delay is 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 communication between departments is crucial to success.
部门之间保持良好的沟通对成功至关重要。