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| English | Norwegian Bokmål |
| open lawn Any relatively unobstructed field of cultivated and mown grass, especially near a house or in a park | plen |
| open sea The high seas lying outside the exclusive economic zones of states. All states have equal rights to navigate, to overfly, to lay submarine cables, to construct artificial islands, to fish, and to conduct scientific research within the high seas | rom sjø |
| open sea fishing Fishing in the deepest parts of the sea | havfiske |
| worked-out open cut A mine where all the mineral that could be profitably exploited has been removed | uttømt dagbrudd |