1. Check the oil at regular intervals, and have the car serviced regularly.
2. He is being constantly monitored with regular checks on his blood pressure.
3. George struggled wildly, going under and resurfacing at regular intervals.
4. She also writes a regular column for the Times Educational Supplement.
5. Make a point of backing up your files at regular intervals.
6. Wanton violence is now becoming a regular feature of urban life.