Usar "on-off switch" en una oración

1. It was almost as if her emotions had an on-off switch

2. I figure I can control it with the on-off switch

3. “Women tend to imagine man’s romanticism as an on-off switch within their reach,” he said

4. Researchers from the University of Texas Health Center at San Antonio found that when stimulated by cold, the body produces a protein called Grb10, which serves as the on-off switch for a molecular pathway that signals white fat cells to turn into brown fat cells