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来源:雅诚德英语网
Every substance, no matter what it is, is composed of very small particles called molecules.
各种物质,不论它是什么,都是由一些称为分子的很小的粒子构成的。
Every substance, no matter what it is, is composed of very small particles called molecules.
各种物质,不论它是什么,都是由一些称为分子的很小的粒子构成的。