In addition, an interface can contain constant declarations.

另外，接口可以包含常量声明。

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You can use arithmetic operators within your constant declarations as long as there are no mixed type expressions.

只要没有混合的类型表达式，就可以在常数说明中使用算术运算符。

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Also as the name says, implicitly typed local variable, you cannot use var for field declaration or constant variables, therefore following declarations will both produce a compiler error.

故名思意，“隐式类型局部变量”将无法用于域变量或常量的声明中，否则将导致编译错误。

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