Essentially, local variables (though not always the objects they point to) are free from both memory and time concerns.

实际上，本地变量(并非始终是它们指向的对象)并不影响内存和时间问题。

youdao

But, with use variables, the closure essentially remembers the context of the variable.

但是，通过使用变量，closure基本上记住了变量的上下文。

youdao

Activities and their flows are the main abstractions and the data manipulated by the processes is essentially hidden in process variables.

活动和活动流是主要的抽象，由过程维护的数据实际上隐藏在过程变量中。

youdao

So this isn't the most useful form that we can have, but what we'll see shortly is that from this, we can then derive further criteria for essentially any set of variables or any set of external constraints, like constant temperature or pressure or volume and so forth that we might set.

所以这不是我们所能得到的最有用的形式，但是我们会很快看到，我们能够进一步推导出包含任意变量,或者任意约束的自发过程判断标准，比如说恒定的温度，压强,体积或者其他我们能够给出的约束。

麻省理工公开课 - 热力学与动力学课程节选