名词短语
中文翻译：根本原因
同义词：
['cause', 'reason', 'basis']
例句：
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1.The root of the problem lies in the lack of communication between the two parties.
问题的原因在于双方沟通不足。
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2.The root of the disease is a weak immune system.
疾病的原因在于免疫系统较弱。
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3.The root of the issue is to find a solution that works for everyone involved.
问题的关键在于找到一个对所有人都有效的解决方案。