“backlog of cases”可以造什么句，backlog of cases造句

These investigators frequently need months to solve crimes, due in part to the backlog of cases at DNA testing centers.

There is a large backlog of cases to hear.

Another Justice Department study showed that the50 largest forensic laboratories received more than1.2 million requests for services in2002: the backlog of cases for these facilities had doubled in the course of one year.