| 单词 | gully erosion | 
| 释义 | > as lemmasgully erosion   gully erosion  n. the erosion of soil by rainwater forming channels. ΘΚΠ the world > the earth > structure of the earth > formation of features > erosion or weathering > 			[noun]		 > soil erosion gulling1567 soil erosion1896 sheet erosion1917 gully erosion1928 truncation1941 1928    Proc. 1st. Internat. Congr. Soil Sci. VI. 755  				That phase of normal gully erosion which gradually cuts out V-shaped ravines usually not excessively deep. 1937    E. J. Russell Soil Conditions & Plant Growth 		(ed. 7)	 viii. 579  				The erosion takes two forms: sheet erosion, which goes on slowly and evenly over a large area, and gulley erosion, which is more localised and washes out the soil into great gulleys or ravines. < as lemmas  | 
	
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