| 单词 | flag-sandstone |
| 释义 | > as lemmasflag-sandstone flag-sandstone n. sandstone that may be split into flags (sense 2). And flagstone n. ΘΚΠ society > occupation and work > materials > raw material > stone or rock > [noun] > building stone > for flooring sand-flag1814 flagstone1815 flag-sandstone1843 the world > the earth > structure of the earth > constituent materials > rock > sedimentary rock > [noun] > sandstone > flagstone sand-flag1814 flagstone1815 flag-sandstone1843 1843 J. E. Portlock Rep. Geol. Londonderry 505 The micaceous flag sandstones of the old red are highly calcareous. < as lemmas |
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