widens , widening , widened
If you widen something or if it widens, it becomes greater in measurement from one side or edge to the other.
He had an operation last year to widen a heart artery.
他去年动了一次心脏动脉扩张的手术。
If you widen something or if it widens, it becomes greater in range or it affects a larger number of people or things.
US prosecutors have widened a securities-fraud investigation.
美国检察官已经扩大了一起证券欺诈案的调查范围。
If a difference or gap widens or if something widens it, it becomes greater.
Wage differences in the two areas are widening.
两地的工资差距正在拉大。