洋中脊 yángzhōngjǐ mid-ocean ridge Origin Definitions Defs Strokes Stroke Words Sentences Sents 大洋中脊 dàyángzhōngjǐ mid-ocean ridge mid-ocean ridge (geology)大西洋中脊 Dàxīyángzhōngjǐ Mid-Atlantic Ridge Atlantic mid-ocean ridge大西洋洋中脊 Dàxīyángyángzhōngjǐ Mid-Atlantic Ridge Atlantic mid-ocean ridge