英语语法分析

An example of a nonadditive measure is a percentage.

一个非相加测度的例子就是百分率。

Additivity (the ability of measures to be summarized): Measures fall into three categories: fully additive, nonadditive, and semiadditive.

相加性（要总结的测度的能力）：测度分成三个类别：全相加的（fully additive）、非相加的（nonadditive）和半相加的（semiadditive）。

But if costs, like utilities, are subjective, nonadditive, and noncomparable, then of course any concept of social costs, including transaction costs, becomes meaningless.

如果成本与效用一样，都是主观的，不可加总、不能比较；那么当然，任何社会成本，包括交易成本的概念就变得毫无意义。