Grand Canyon
- a deep gorge in Arizona, formed by the Colorado River. It is about 440 km (277 miles) long, 8 to 24 km (5 to 15 miles) wide, and, in places, 1,800 m (6,000 ft) deep. The area was designated a national park in 1919.大峡谷（亚利桑那州深峡谷, 由科罗拉多河形成, 长约440公里, 即277英里, 宽8至24公里, 即5至15英里, 部分地区深达1,800米, 即6,000英尺, 该地区在1919年被定为国家公园）。