Each reason has an independent moral force.

每一种理由都有独立的道德力量支撑
That's the general point

大致是这样
and you can see this if you imagine a slight variation on the marriage case.

把这个版本作一点小改动你就会明白
Suppose we haven't been married for 20 years.

假设我们结婚不到20年
Suppose we were just married

假设我们新婚
and that the betrayal occurred on the way to our honeymoon in Hammond, Indiana.

在印第安纳州哈蒙德度蜜月中她就背叛了我
After the contract has been made,

这时契约已经成立
but before there is any history of performance on my part,

但我这一方还没有履行任何义务
performance of the contract I mean,

我是指关于契约的履行
I would still with Julian, I'd be able to say

我会和朱利安一样说
but you promised, you promised.

但你承诺了你承诺了
That would isolate the pure element of consent,

这就把单纯的同意这一要素抽立出来