名词
中文翻译：主要水
同义词：
['primary fluid', 'primary fluids例句：1. The primary water in the lake is very clear.（湖里的初级水非常清澈。）']
例句：
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1. The primary water in the lake is very clear.
湖里的初级水非常清澈。
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2.The primary water is essential for life on Earth.
初级水对地球上的生命至关重要。
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3.The primary water source is often contaminated by industrial waste.
初级水源经常受到工业废物的污染。