形容词
中文翻译：主要的
同义词：
['primary', 'principal', 'primary']
例句：
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1. The main reason for the delay was due to the weather.
延误的主要原因是因为天气。
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2. Maintaining good health is essential for a happy life.
保持健康对幸福生活至关重要。
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3. The main course of the meeting was discussing the budget.
会议的主要议程是讨论预算。