名词
中文翻译：粒子
同义词：
['substance', 'particle']
例句：
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1. The particles in the air are causing the dust to rise.
空气中的粒子正在导致灰尘上升。
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2. The scientist found that the particles of matter were different from those in the previous experiments.
科学家发现物质的粒子与之前的实验中的粒子不同。
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3. The particles of the new drug are smaller than those in the old one.
这种新药的粒子比旧药的小。