| 释义 | 
		Hy·dra AHD[hīʹdrə] D.J.[ˈhaɪdrə]K.K.[ˈhaɪdrə]n.(名词)- Greek Mythology The many-headed monster that was slain by Hercules.【希腊神话】  九头蛇怪:赫拉克勒斯所杀死的一个多头怪物
 
 - A constellation in the equatorial region of the southern sky near Cancer, Libra, and Centaurus. Also called  Snake 2长蛇星座:南天赤道地区的一个星座,靠近巨蟹座、天秤座和人马座 也作  Snake2
 
 - A persistent or multifaceted problem that cannot be eradicated by a single effort.难以根绝的祸患:难以轻松解决的、头绪多的、复杂的问题
 
 
 - Middle English Idra 中古英语 Idra 
 
 - from Latin Hydra 源自 拉丁语 Hydra 
 
 - from Greek Hudra [Hydra, a water serpent] * see  wed- 1源自 希腊语 Hudra [水蛇、水里的一条蛇] * 参见 wed- 1
 
 
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