有强迫函数作用于上的，则系统必须作为非齐次的来考虑。
With forcing functions acting, a nonhomogeneous system must be considered.
如果你想要你的函数携带参数或，参量，这里有一个微妙的语义差别在，参数和参量之中，但是为了所有的意图，和目的，他们作用是一样的。
If you want it to take a so-called argument or a parameter, there's a subtle semantic distinction between arguments and parameter, but for all intents and purposes, they're the same thing.
一些函数有可能其作用的方式本身就是危险的。
要知道如果一个函数有副作用，只需看其签名的能力是非常有用的当试图了解函数是干什么的。 少一个函数可以做的越少，你要明白！
The ability to know if a function has side effects just by looking at its signature is very useful when trying to understand what the function does.
要知道如果一个函数有副作用，只需看其签名的能力是非常有用的当试图了解函数是干什么的。 少一个函数可以做的越少，你要明白！
The ability to know if a function has side effects just by looking at its signature is very useful when trying to understand what the function does.
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