单元格宏 这章所列出的宏是由求解器返回的实数变量，并且这些变量都是定义在一个单元格中的。

The macros listed in this section are real variables returned by the solver, and are de_ned on a cell.

youdao

所以任务持续时间不是一个单一的实数，而是描述一定时间范围内完成的可能性的随机变量。

So the task duration is not a single real number, rather it is a random variable that describes the likelihood of completion within a certain range of time.

youdao

比如你简单修改变量的类型和方法的名字，这样程序就可以做实数的加法了，如图2 - 3。

You could, for example, change this program so that it added two real Numbers simply by changing the types of the variables and the names of the input methods, as shown in Figure 2-3.

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