| 单词 | brown rat |
| 释义 | > as lemmasbrown rat brown rat n. a large rat, Rattus norvegicus, varying in colour from brown to grey and black, found worldwide and regarded as a major pest (see rat n.1 1); also called Norway, common, Hanover, Asiatic, sewer, and grey rat.The brown rat is the source of albino and other domestic breeds. ΚΠ 1737 Trans. Highland & Agric. Soc. Scotl. 5 136 The brown rat is abundant and very destructive. 1801 G. Shaw Gen. Zool. II. 43 In our own island the black and the brown rats, the field and domestic mice are the principal destroyers. 1884 Month Aug. 545 Brown rats delight in low haunts such as cellars, pigsties, and sewers. 1934 J. A. Thomson & E. J. Holmyard Biol. for Everyman II. 1376 The brown rat..is more plastic and tamable, as is well seen in the behaviour of its albino derivative the ‘white rat’. 2011 Independent (Nexis) 21 Nov. The latest estimate has put the UK population of brown rats at between 10 and 20 million. < as lemmas |
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