So that means if we add up all of the formal charges within the molecule, what we would expect to see is that they sum up to give a net charge of negative 1.

那么这就意味着如果我们把这个分子中,所有的形式电荷加起来，我们应该会看到它们加起来,之后得到的净电荷量为负一。

麻省理工公开课 - 化学原理课程节选

Just facts that add up to a sum that is truly unthinkable.

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"Mirror Mirror" may not add up to the sum of its better parts -- and it's a curious time of year to release it -- but there should be an audience for a frivolous family film with this many frills and ruffles.

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You get to the 3rd Alternative through synergy, which happens when the talents of two or more people add up to more than the sum of the parts.

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