名词
中文翻译：无控制粒子
同义词：
['unregulated particles', 'unstable particles']
例句：
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1. The particles inthe air are causing health problems for many people.
空气中的粒子正给许多人带来健康问题。
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2. The research team found that these particles could be used to clean up oil spills.
研究小组发现这些粒子可以用来清理油污染。
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3. The particles in the air were so small that they couldn't be seen with the naked eye.
空气中的粒子如此之小，以至于肉眼无法看见。