形容词
中文翻译：正在发展的
同义词：
['growing', 'developing', 'maturing']
例句：
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1. The economy is developing rapidly in this region.
该地区的经济正在迅速发展。
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2. The company is developing a new product line.
该公司正在开发新产品线。
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3. The project is developing slowly due to lack of funding.
由于缺乏资金，该项目发展缓慢。