| 1 | For many people, credit cards are a convenient "safety valve", a way to relieve pressure when money gets tight. | |
| 2 | At various moments during the Cold War, the veto was a critical safety valve that probably saved the organization from disintegration. | |
| 3 | This, some say, acts as a safety valve, allowing citizens to vent their anger directly rather than take to the streets. | |
| 4 | One of the premises of 'Mad Men' is that the behavior on the show is something of a safety valve. | |
| 5 | And so once you start thinking about breaks in the main coolant pumps, pressuriser relief valves not opening, sources of water, makeup water. |
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