名词
中文翻译：粉末颗粒
同义词：
['powder', 'dust', 'grains']
例句：
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1.The powder particles in the air were so fine that they could hardly be seen.
空气中的粉末颗粒非常细小，几乎看不见。
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2.The grains of sand on the beach are like tiny pebbles.
海滩上的沙子粒像小石子一样。
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3.The farmer used a machine to grind the wheat into powder particles for baking bread.
农民用机器将小麦磨成粉末颗粒用于烘焙面包。