| 释义 |
black spot
1. Any of various diseases of plants or animals, producing black spots upon the diseased portions; esp. a disease of roses (see quot. 1889).
1889Cent. Dict. I. 571/1 Black-spot, a disease of rose-bushes, characterized by diffuse, dark-colored spots on the upper surface of the leaves. It is caused by a parasitic fungus, Asteroma Rosæ. 1906M. C. Cooke Fungoid Pests 50 Chrysanthemum Leaf-Spot... The black spot (Cylindrosporium Chrysanthemi) is very destructive in Canada. Ibid. 134 Peach Freckle..is known in the United States as ‘scab’ or ‘black spot’... The fungus is a kind of black mould which attacks ripe Peaches. 1910F. C. Stewart in N.Y. Agric. Exper. Station Bull. CCCXXVIII. 364 Maple, Silver..Black Spot, Rhytisma acerinum..the characteristic tar-colored spots of which may be detected at a considerable distance. 1933Jrnl. R. Hort. Soc. LVIII. 253 Black spot, the worst enemy of the rose. 1966Punch 30 Mar. 462/1 Huge stocks of the munitions of bacterial warfare, of mildew and rust, black spot, botrytis and scab, are being made ready for immediate use at call.
2. A place or area of trouble, anxiety, or danger; esp. a dangerous section of a road.
1925Daily Herald 30 June 2/3 Against general and protracted depression in the ‘black spots’, they might..set..improvement in the trades. 1936Discovery Nov. 355/2 The development of newer industries is vital to the recovery of our distressed areas, which remain the one black spot in the otherwise remarkable position of Great Britain. 1937Daily Herald 5 Jan. 7/4 Road-crossing improvements at ‘black spots’ throughout London. 1940R. Morrish Police & Crime-Detection i. 20 ‘Black spots’ are easily recognized by recording the districts and streets where, for example, housebreaking takes place. 1959Listener 6 Aug. 208/2 You begin to see what are the black spots, that is to say, where accidents do in fact happen. |