名词
中文翻译：直接流动
同义词：
['direct current', 'direct flow of water', 'direct flow of electricity']
例句：
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1. The river has a direct flow from the mountains to the sea.
这条河流从山里直接流向大海。
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2. The company's direct flow of cash from investors is $50 million per year.
这家公司每年从投资者那里获得直接现金流入5亿美元。
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3. The power plant generates electricity directly from the coal mine.
发电厂直接从煤矿发电。