名词
中文翻译：阶段
同义词：
['period', 'phase', 'stage']
例句：
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1. The development of a new technology is a gradual process that can be divided into several phases.
新技术的发展是一个逐步的过程，可以分成几个阶段。
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2. In the final phase of the experiment, we observed significant changes in the reaction rate.
在实验的最后阶段，我们观察到反应速率发生了显著变化。
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3. The company's growth has been divided into three phases: expansion, maturity, and decline.
公司的发展阶段可以分为扩张、成熟和衰退三个阶段。