形容词
中文翻译：未充分发展的
同义词：
['underdeveloped', 'underdeveloped', 'underdeveloped']
例句：
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1. Theeconomy is still underdeveloped in many parts of the world.
世界上许多地方的经济仍然未充分发展。
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2. The country's infrastructure is still underdeveloped compared to other developed countries.
该国的基础设施与其他国家相比仍显未充分发展。
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3.The government has been working hard to improve the underdeveloped areas.
政府一直在努力改善那些未充分发展的地区。