形容词
中文翻译：正在发展的
同义词：
['in progress', 'under development', 'in the process of developing']
例句：
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1. The project is still developing, so we need to be patient.
这个项目还在发展过程中，所以我们需要有耐心。
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2. The company is in the process of developing a new product line.
该公司正在开发新产品线。
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3. The economy is in the developing stages, and it's important to focus on long-term growth.
经济正处于发展阶段，重要的是要关注长期增长。