1.   The social system is undergoing continuous evolution to adapt to these rapid changes.

2.   The system underwent a process of simplification.

3.   Two rival laser surgery systems are undergoing clinical trials in the U.S.

4.   The social security system would undergo fundamental reform.

5.   We have already seen that when a system undergoes a change at constant pressure the energy transferred as heat is called the enthalpy change.

6.   And the health care system underwent a dramatic transformation.

7.   For nearly a year, those systems have been undergoing tests monitored by consultants at KPMG.

8.   Goss Newsliner presses have also been sold to The Miami Herald and The Denver Post, but those systems are still undergoing trial runs.

9.   He said the system had been undergoing repairs because the sirens recently had been sounding when they were not supposed to.

10.   In recent years, museum cataloguing systems have undergone a digital revolution, making it even more expensive.