名词
中文翻译：主体
同义词：
['core', 'essential', 'principal']
例句：
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1. The main body of the agreement is that both sides must cooperate.
协议的主要部分是双方必须合作。
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2. The main body of the meeting was spent discussing the budget.
会议的主要部分是讨论预算。
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3. The company's main body of staff consists of engineers and managers.
公司的主力员工包括工程师和经理。