geosynclinen.
英 dʒiːəʊ'sɪŋklaɪn | 美 ,dʒio'sɪnklaɪn
中文n. [地质] 地槽
词根词源
geosyncline (n.)1895, probably a back-formation from adjective geosynclinal (1879); see geo- + synclinal. Geosynclinal was used as a noun meaning "a region of depression" from 1873.
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