名词中文翻译1
中文翻译：Unknown
同义词：
['particle', 'particulate matter']
例句：
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1. The particles in the air were so small that they could not be seen with the naked eye.
空气中的粒子非常小，肉眼无法看见。
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2. The particles in the water are too small to see with the naked eye.
水中的微粒太小，肉眼无法看见。
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3. The particles in the soil are too small to see with the naked eye.
土壤中的微粒太小，肉眼无法看见。