agreement 
英 [əˈɡriːmənt]  美 [əˈgrimənt] 
n. 同意；协议；一致

例句：
Surely marriage is an agreement between two people? 

婚姻肯定是两个人之间的协议了？

By the end of the call we came to an agreement. 

在通话结束前我们达成了协议。

It looks as though an agreement has now been reached. 

看来现在似乎达成了协议。