This detailed astronaut photograph of Llullaillaco illustrates an interesting volcanic feature known as a coulee (image top right).
宇航员所拍摄的尤耶亚科火山的精细图像展示了名为熔岩流的有趣的火山地貌(图中右上方)。
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.
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。
This photograph of Llullaillaco, taken from aboard the International Space Station, illustrates an interesting volcanic feature known as a coulee.
这张由国际空间站拍摄的尤耶亚科火山的照片，呈现了火山的一个有趣的特征，我们称之为coulee(法语‘熔岩流’)。
Among the projects he constructed or helped construct: the Los Angeles Aqueduct; the Oakland-San Francisco Bay Bridge; and the Hoover, Parker, Shasta and Grand Coulee DAMS.
他所参与建设或者帮助建设的工程有：洛杉矶高架渠、奥克兰-圣弗兰西斯科海湾大桥、胡佛大坝、帕克大坝、舍斯特大坝和大古力水坝。
Among the projects he constructed or helped construct: the Los Angeles Aqueduct; the Oakland-San Francisco Bay Bridge; and the Hoover, Parker, Shasta and Grand Coulee DAMS.
他所参与建设或者帮助建设的工程有：洛杉矶高架渠、奥克兰-圣弗兰西斯科海湾大桥、胡佛大坝、帕克大坝、舍斯特大坝和大古力水坝。
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