| environ. | 大陆架 | continental shelf The gently sloping seabed of the shallow water nearest to a continent, covering about 45 miles from the shore and deepening over the sloping sea floor to an average depth of 400 ft. It continues until it reaches the continental slope. The continental shelf contains most of the important fishing grounds and a range of resources, including gas and oil, sand and gravel. However, the shelf is, in general, a structural extension of the continent, and so may also be a source of minerals found in that region, such as tin, gold and platinum (最接近大陆逐渐倾斜的浅水海床，包括从海岸45米到平均深400英尺的倾斜海底。 一直延续到大陆坡。 大陆架包括了最重要的渔场和某一范围的资源，包括天然气和石油，沙子和沙砾。 然而，一般而言，大陆架是大陆结构的延伸，因而在那个区域中可以发现例如锡、金和铂等矿物资源。) |
