分析句子:In it they noted the number..

分析句子:In it they noted the number..
In it they noted the number of conversation or email exchanges they had lasting more than 10 minutes.
这句怎么翻译.
它的语法结构如何分析.
conversation or email exchanges they had lasting more than 10 minutes.
这里怎么理解?
conversation or email exchanges (what) they had...
这里会有从句吗?
我翻译这个句子:
在这里,他们记录了他们所有超过十分钟的谈话和email交流的内容.