每个函数都可以有若干数目不定的参数。

Each function can have a variable number of parameters.

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一个带参数的查询也可以将一组数量不定的参数作为它的绑定参数。

A parameterized query also takes a variable number of arguments as its binding parameters.

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还要注意的是，Dispatch实例可以接受数目不定的参数；首先对参数的数目进行匹配，其次是其类型。

Note also that a Dispatch instance can accept a variable number of arguments; matching is done first on number of arguments, then on their types.

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