谁来帮我讲讲这句话的语法结构

Question

The process by which we store and retrieve information in our brains has been the focus of scientific research for many years.

Answer 1

我们大脑储存并检索信息的过程是许多年来科学研究的焦点。
主语The process by which we store and retrieve information in our brains
谓语 has been
宾语 the focus of scientific research
by which 定语从句，后面的we store and retrieve information in our brains修饰process（过程） store and retrieve information 【by】 the process

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Answer 2

by which we store and retrieve information in our brains 为定语从句，修饰 The process (作主语)。　has been 为现在完成时作谓语。详细语法分析见下:

Answer 3

我们在大脑中储存和检索信息所凭借的方法一直是许多年以来科学研究的中心.
by which we store and retrieve information in our brains是介词+关系代词引导的定语从句.
主句是The process has been the focus of scientific research for many years.