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particlepar·ti·cle /ˈpɑrtɪkl / noun [countable] - a very small piece颗粒；微粒◆Particles of the substance were examined under a microscope.这种物质的颗粒被放到显微镜下观察。
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physics物理) a very small piece of matter, such as an electron or proton, which is part of an atom粒子
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English language arts英语语言文学) a minor word that is not as important as a noun, a verb, or an adjective小品词◆In the phrasal verb “break down,” “down” is an adverbial particle.在短语动词 break down 中，down 是副词小品词。
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