| 单词 | pond scum |
| 释义 | pond scumnounany free-floating freshwater alga that forms a green scum on water. Origin of pond scumFirst recorded in 1885–90 Words nearby pond scumpond life, pond lily, Pondo, pondok, Pondoland, pond scum, pond-skater, pond snail, pondweed, pone, pong Dictionary.com UnabridgedBased on the Random House Unabridged Dictionary, © Random House, Inc. 2020 British Dictionary definitions for pond scumpond scum nouna greenish layer floating on the surface of stagnant waters, consisting of various freshwater algae Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012 |
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