Where oil sands are close to the surface, they are extracted in large open pit mines.
那里的油砂离地表很近，可以从巨大的露天矿井里直接抽出来。
Greenhouse gas emissions of tar sands crude are 40% higher than conventional oil, and the open-pit mining has devastated Alberta's boreal forest.
焦油砂的温室气体排放量比普通石油高40%，露天采矿已经极大地破坏了阿尔伯塔的北方气候带森林。
Open for breakfast, lunch, and dinner daily, Sands Point overlooks the Gulf of Mexico.
提供早餐，午餐和晚餐，每天，砂点俯瞰墨西哥湾。
The kinetic model agrees well with experimental data of polystyrene particles and that of natural sands in two-dimensional open-channel flows.
模型与二维明渠流轻质沙和天然沙试验资料符合很好。
The kinetic model agrees well with experimental data of polystyrene particles and that of natural sands in two-dimensional open-channel flows.
模型与二维明渠流轻质沙和天然沙试验资料符合很好。
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