51.   If the system proves successful, it could be adopted for general use at major competitions.

52.   In Libya, this system has proved so diffuse that in reality power rests in the hands of those at the top.

53.   In the end, the system may prove only as strong as its weakest links.

54.   Israeli vaunted intelligence system has sometimes proved to be faulty.

55.   Lee said the system has proven useful more than once in helping tankers to avert collision and the resultant pollution which may occur.

56.   So far, its European-made treatment system has proven to be an asset.

57.   The built-in firefighting system proved more than adequate.

58.   The labor camp system has proven effective for reforming minor criminals, he said.

59.   The open-outcry system had proved itself during this last big drop in the market, he said.

60.   The non-graded system was patterned after schools in US, India and England where, Fr. Alarcon says, the system has proven to be very effective.