大洋中脊 dàyángzhōngjǐ mid-ocean ridge Definitions Defs Origin Strokes Stroke Words Sentences Sents 大洋中脊 dàyángzhōngjǐ mid-ocean ridge mid-ocean ridge; an underwater mountain range formed by plate tectonics
大洋中脊 dàyángzhōngjǐ mid-ocean ridge mid-ocean ridge; an underwater mountain range formed by plate tectonics
