| 单词 | canadian pondweed |
| 释义 | > as lemmasCanadian pondweed Canadian pondweed n. a perennial aquatic plant, Elodea canadensis (family Hydrocharitaceae), having whorls of small leaves and inconspicuous white or purple flowers that float on the surface of the water; = Canadian waterweed n.Canadian pondweed is native to North America and has become naturalized in Europe where it is considered an invasive species. It is also cultivated for use in aquaria and ponds. ΚΠ 1882 Fortn. Rev. Nov. 634 The Canadian pondweed propagated itself twenty years ago through our rivers and canals, till half of them were choked up. 1966 Times 25 Jan. 8/7 Canadian pondweed..is supposed to have begun its disastrous career when a scrap went down the plug-hole of a laboratory worker's basin. 2001 Water Gardening Oct. 32/2 While it is one of the most efficient oxygenating plants, the Canadian pondweed (Elodea canadensis ) is vigorous, fast growing and can easily get out of control. < as lemmas |
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