功能测试与单元测试相差甚远。

Functional tests and unit tests are vastly different.

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功能的定义遵循与单元定义相类似的步骤

The definition of a capability follows steps similar to the unit definition

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一个空单元没有与单元的键相关联的值。

An empty cell has no value associated with the cell's key.

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So for some you that are less interested in maybe the physical structure of an individual atom, now some more exciting material for you might be coming up if you like to think about how, instead, molecules behave, either within bonding, within themselves, or with other molecules, that's what we're going to be heading to in this next unit.

那么对于某些同学，你们或许不感兴趣,对于单个原子的物理结构，现在可能有令你感到兴奋的内容,要出现了，如果你更喜欢思考,分子的行为，或者是关于成键的，或者是关于它们本身的，又或者与其它分子之间的行为，这些将是我们下个单元要讲的内容。

麻省理工公开课 - 化学原理课程节选