| 单词 | mid-ocean ridge |
| 释义 | > as lemmasmid-ocean ridge mid-ocean ridge n. any of the mountainous ridges (several kilometres high and over a thousand wide) that rise abruptly from the abyssal plain in the middle of each ocean basin and form a connected worldwide system, marking the site of magmatic upwelling associated with sea-floor spreading and having a central rift that overlies earthquake foci along much of their length.extracted from mid-oceann.adj.adv.< as lemmas |
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