| 释义 |
hydraBrE /ˈhaɪdrə/ NAmE /ˈhaɪdrə/ noun Hydra (in ancient Greek stories 古希腊神话) a snake with several heads . As one head was cut off , another one grew . In the end it was killed by Hercules 许德拉，多头蛇（砍去一个头即长出新头，后为大力神赫拉克勒斯所杀）(formal ) a thing that is very difficult to deal with , because it continues for a long time or because it has many different aspects 棘手的复杂事物；难以根绝的祸患(biology生物) an extremely small water creature with a tube -shaped body and tentacles around its mouth 水螅 |