The Columbia River in the us Northwest lost about 14 percent of its volume from 1948 to 2004, largely because of reduced precipitation and higher water usage in the west.
2
美国华盛顿州中北部一个峡谷，长约48公里(30英里)，为哥伦比亚河冲刷形成，其水来自于大古力水坝。
A gorge, about 48 km (30 mi) long, of north-central Washington, carved by the Columbia River. It is fed by water from the Grand Coulee Dam.
3
根据维基，摩特诺玛瀑布是美国第三高的瀑布，总高度有620多尺，坐落在哥伦比亚河峡谷旁。
According to wiki, Multnomah Falls is the third tallest waterfall in US. The total height of this waterfall is about 620 feet. It is located near the Columbia River Gorge.
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