求教一个英语问题，《肖声克的救赎》里面的一个句子

[oldcai]

原句：
I have to remind myself that some birds aren't meant to be caged. Their feathers are just too bright and when they fly away, the part of you that knows it was a sin to lock them up does rejoice.

疑惑：
it was a sin to lock them up does rejoice，这句是什么句式呢，还有其他的句子举例么？
到底是does rejoice的是the part of you还是it（这个行为）

谢谢

[talentliuyang]

the part of you

[oldcai]

@talentliuyang
谢谢，也就是说是
the part of you that knows it was a sin to lock them up and does rejoice.
的意思么，有这样缩写的用例么？这样的句子第一次见到的样子。

[flowerpiggy]

the part of you (that knows it was a sin to lock them up) does rejoice.

括号中部分是 the part of you 的定语从句。

[clowwindy]

(the part of you (that knows (it was a sin to lock them up))) does rejoice.

忽然明白为什么 lisp 的编译器好写了

[oldcai]

@flowerpiggy 原来如此，谢谢了。

[oldcai]

@clowwindy 恩，我意识到了我是因为支持的嵌套层数太浅所以溢出了

[poplar]

让我想起了当年的GMAT。