The theory of the term structure is the theory of how interest rates differ according to maturity or term.

利率期限结构理论就是,怎样由不同的期限,产生不同的利率

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That means, in the simplest-- it's called the expectations theory of the term structure.

这意味着,在最简单的利率期限结构理论,即利率期限结构的预期理论中

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What he says is those forward rates are what people think interest rates will be in the future and that's called the expectations theory of the term structure.

这里所指的远期利率就是人们预期的,未来利率,我们将这种理论称作,利率期限结构的预期理论

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