名词
中文翻译：初级中心
同义词：
['primary focus', 'primary center of gravity例句：1. The primary centre of the company is its research and development department.（公司的主中心是其研发部门。）']
例句：
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1. The primary centre of the company is its research and development department.
公司的主中心是其研发部门。
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2. The primary centre of the city is the financial district.
城市的主中心是金融区。
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3.The primary centre of the problem was identified as a lack of funding.
问题的主要中心被确定为缺乏资金。