But, at the same time, we do know about the atomic theory of matter.
但是，同时我们也知道，物质的原子理论。
Before the atomic theory of matter, and molecules, and so forth was well worked out.
在物质的原子，分子理论，和其他理论之前。
The present symbols express the system set out by the atomic theory of matter.
现在化学符号则表示化学中物质的原子理论的系统性。
Modern atomic theory has superseded this theory.
现代原子理论已取代了这个理论。
The atomic theory was not accepted until the last century.
原子学说直到上个世纪才被人们所接受。
The atomic theory is valuable not only in theory, but also in practice.
原子模式理论不仅具有理论价值，更具有实践的指导意义。
The atomic theory is valuable not only in theory, but also in practice.
原子模式理论不仅具有理论价值，更具有实践的指导意义。
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