根据声明这些变量的方式及位置，这三类变量有以下五种作用域。

There are five types of scope that these three types of variables can have, depending on how and where they are declared.

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让我们来研究三类主要的绑定变量：标量、数组和散列。

Let's look at the three main types of tied variables: scalars, arrays, and hashes.

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本文中我们在经典风险模型的基础上构造了三类随机变量具有相依性的风险模型并对它们进行了研究，得到了与破产相关的一些变量的表达式或性质。

In this text, based on the classical risk model, we construct and research three kinds of new risk models with dependence. Finally we obtain some expressions or characters of the variables about ruin.

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