名词
中文翻译：支柱
同义词：
['support', 'backbone project']
例句：
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1. The new bridge is the pillar of our city's transportation system.
这座新桥是我们城市交通系统的支柱。
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2. The government has invested heavily in infrastructure development as a pillar of economic growth.
政府在基础设施发展上投入巨大，作为经济增长的支柱。
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3. The construction of this dam will be a crucial pillar for the region's water resources management.
这个大坝的建设将成为该地区水资源管理的关键支柱。