| 单词 | mid-ocean ridge |
| 释义 | mid-ocean ridge mid-o.cean ridge AHD: [m¹d“½”sh…n] D.J. [6m!d7*&.*n]K.K. [6m!d7o.*n]n.（名词）A series of mountain ranges on the ocean floor, more than 84,000 kilometers (52,000 miles) in length, extending through the North and South Atlantic, the Indian Ocean, and the South Pacific. According to the plate tectonics theory, volcanic rock is added to the sea floor as the mid-ocean ridge spreads apart.海洋中部的山脊：位于海底的一系列山脉，长约84,000公里(52,000英里），穿越南北大西洋、印度洋以及南太平洋。根据地壳构造理论，当海洋中部的山脊向四外延伸的时，火石岩不断填补海底表面 |
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