hydra
名词复数: hydras
hydra基本解释
n.(希腊神话中的)九头蛇;难以根除之祸害;水螅
n.长蛇星座
hydra同义词
hydra相关例句
hydra英英释义
"Hydra was slain by Hercules"
"we may be facing a hydra that defies any easy solution"