Fort Knox
noun
humorousuk/ˌfɔːt ˈnɒks/us/ˌfɔːrt ˈnɑːks/be like Fort Knox
If abuildingor anareais like Fort Knox, it isimpossibletoenterorleaveit because it is so wellprotected.
像诺克斯堡般固若金汤Fortifications
- acropolis
- barricade
- bastion
- battlements
- castle
- defensive architecture
- drawbridge
- earthwork
- enceinte
- entanglement
- foxhole
- Martello tower
- moat
- moated
- motte
- redoubt
- stockade
- storm cellar
- stronghold
- turret