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。

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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。

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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。

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And they had this feeling because there had just been this huge boon of discovery, of scientific advances that included Newtonian mechanics, it included Dalton's atomic theory of matter, also thermodynamics and classical electromagnetism.

他们会有这样的感觉,是因为他们刚，经历科学上的,大繁荣期，包括牛顿力学,道尔顿物质原子理论，热力学和电磁学,都取得了巨大进展。

麻省理工公开课 - 化学原理课程节选

For example, in terms of the atomic theory of matter, at the time at the turn of the Century, the understanding was that atoms were the most basic constituent of matter, meaning you couldn't break atoms up into anything smaller - that was it, you're done.

例如在原子理论中,在19，20世纪之交的时候,人们认为原子是,组成物质的最基本粒子,也就是说你不能,把原子再分割了,就这样了。

麻省理工公开课 - 化学原理课程节选