| English | Chinese |
| deep sea Region of open ocean beyond the continental shelf | 深海 (在大陆架以下更深处的海洋区域。) |
| deep sea deposit | 深海矿床 |
| deep-sea disposal The disposal of solid waste or sludge by carrying the wastes out to sea, usually in a barge, and dumping into deep water | 深海丢弃 (将固体废弃物运送到大海丢弃，通常用平底船运输，再倾弃于深海。) |
| deep sea fishing Fishing in the deepest parts of the sea | 深海捕鱼 (在海洋最深的区域捕鱼。) |
| deep sea mining The most valuable of the marine mineral resources is petroleum. About 15% of the world's oil is produced offshore, and extraction capabilities are advancing. One of the largest environmental impacts of deep sea mining are discharged sediment plumes which disperse with ocean currents and thus may negatively influence the marine ecosystem. Coal deposits known as extensions of land deposits , are mined under the sea floor in Japan and England | 深海采矿 (最有价值的海洋矿物资源是石油。 世界上约有15%的石油产自外海，且提取能力不断进步。深海采矿对环境最大的影响之一是弃置沉积物所产生的烟尘随着洋流而扩散，因此可能对海洋生态产生负面影响。众所周知煤矿是陆上矿藏的延伸，已开采的有日本和英国海底的煤矿。) |
| deep-seated fire | 深层火情 |
