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学科
- Mountains[remove]30
- Shrubs[remove]30
- Trees[remove]30
- Roads12
- Rocks12
- National parks & reserves11
- Automobiles7
- Forests7
- Flowers6
- Clouds5
- Lakes & ponds5
- Valleys5
- Cumberland mountains4
- Fog4
- Great smoky mountains (n.c. and tenn.)4
- Newfound gap (n.c. and tenn.)4
- Tennessee river valley4
- Cliffs3
- Shadows3
- Whitney, Mount (Calif.)3