national park 
noun
An area of countryside, or occasionally sea or fresh water, protected by the state for the enjoyment of the general public or the preservation of wildlife: commercial exploitation of natural resources in a national park is illegal...
- Also subject to public control are the national parks and nature reserves.
- Finally, it must be remembered that this is a site in a conservation area in a national park.
- That could lead to development destructive to wilderness areas and even national parks.
- electrostatics
- electrostatic units
- electrostimulation
- electrostriction
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- electrosurgery
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- electrosynthesis
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- electrotactic
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- electrotechnic
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- electrotherapist
- electrotherapy