名词
中文翻译：初级到次级流动
同义词：
['primary-to-tertiary flow', 'primary-to-secondary circulation']
例句：
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1. Theprimary-to-secondary flow in the river is responsible for the formation of sediment.
河流中的初级到次级流动负责形成沉积物。
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2. The primary-to-secondary flow in the ocean plays a crucial role in the carbon cycle.
海洋中的初级到次级流动在碳循环中起着至关重要的作用。
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3. The primary-to-secondary flow in the air is responsible for the distribution of pollutants.
空气中的初级到次级流动负责污染物的分布。