Because we'd like our Lists to be generic in the type of element they contain, we'd like our static factory method to take an argument of type variable t and return an instance of List.

因为我们希望List成为其所包含的元素类型的泛型，所以希望静态factory方法带有类型变量t这一参数并返回List的实例。

youdao

I also present a useful feature for variable-length argument lists, the gather and scatter operators.

此外还有一个非常有用的功能：可变长度的列表，聚集和分散运算符。

youdao