function call syntax

You then can call the functions using standard function call syntax, by combining this prefix with the name of the method to be invoked.

然后通过组合该前缀与被调用方法的名称，可以使用标准的函数调用语法调用函数。

Just as iterators are a generalization of Pointers, function objects are a generalization of functions: a function object is anything that you can call using the ordinary function call syntax.

正像iterators是指针的一般化，函数对象是函数的一般化：一个函数对象是你可以使用普通函数调用语法。

Think of this as a function that takes two techs arguments, the first of which is univs and the second of which is techs. And this is just a different syntax for writing that function call.

想下有两个参数的函数，第一个是univs第二个是，这就是对于函数调用的，不同语法的书写规则。