名词
中文翻译：Unknown
同义词：
['initial phase', 'initial stage例句：1. The first phase of the project is designing the infrastructure.（项目的第一阶段是设计基础设施。）']
例句：
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1. The first phase of the project is designing the infrastructure.
项目的第一阶段是设计基础设施。
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2.The first phase of the research was to identify the problem.
研究的第一阶段是识别问题。
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3.The first phase of the construction was the demolition of the old building.
建设的第一阶段是拆除旧建筑。