- According to the principle of the "spherical shell destabilization" theory, the forming processes of outburst hole and extruding hole are studied.
- His strength in a crisis is an ace in the hole.
- He chiseled a hole in the door to fit a new lock.
- The bird picked a hole in the ice with its beak.
- The child has picked a hole in his new jumper.
- Stick your hand in and see what's in the hole.