| 单词 | rain mark |
| 释义 | > as lemmasrain mark rain mark n. Geology (now rare) = rain print n. ΚΠ 1851 C. Lyell in Q. Jrnl. Geol. Soc. 7 239 I received from Mr. Richard Brown some fine specimens of rain-marks from the greenish shales of the coal-measures of Cape Breton, Nova Scotia. 1873 Jrnl. Amer. Geogr. Soc. 4 383 The sandstones prevail for some distance down; and among the fragments rain-marks..were abundant. 1911 Proc. Amer. Philos. Soc. 50 637 The erect stumps are associated with rain marks and footprints, clear evidence of sub-aerial position. < as lemmas |
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