对,
短语
as understood ( = as has/have been understood,...)
as stipulated ( = as has/have been stipulated,...)
as stated ( = as has/have been stated,...)
as previously discussed ( = as has/have been previously discussed,...)
等等
都是省略语
完整(缩短前)的句子一般是括号内的句型 .
例:
As stipulated in the booking agreement,room cancellations are subject to a 25% cancellation charge.