简要回顾了分析显变量交互效应的常用方法。

Methods for the analysis of interaction effects between observed variables were briefly reviewed.

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显式类型语言要求声明每个变量和每个函数参数。

A manifestly typed language forces you to declare each variable and each function argument.

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变量的显式类型化（即将变量声明为 String或 Collection） 依然是可选的。

Explicit typing of variables (that is, declaring a variable as a String or Collection) is still optional.

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