| 单词 | reef flat |
| 释义 | > as lemmasreef flat reef flat n. the horizontal upper surface of a coral reef, often exposed as a flattened eroded platform except at high tide. ΘΚΠ the world > the earth > land > land mass > reef > [noun] > part tailing1684 tail1762 reef flat1886 reef platform1899 1886 Trans. Royal Soc. Edinb. 32 557 I..came upon the coral rock exposed in flat surfaces resembling those of the ordinary reef-flat. 1931 J. S. Gardiner Coral Reefs & Atolls ii. 35 Such rock masses as are visible on the reef flat do not stand up above the high tide level. 1991 R. S. K. Barnes & K. H. Mann Fund. Aquatic Ecol. (ed. 2) xi. 223/1 Shallow water and frequent exposure to the air prevent the extensive growth of corals. A reef flat is formed, dominated by frondose algae and seagrasses. < as lemmas |
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