hydra
英['haidrə]美['haidrə]
n. 九头蛇,难以根除之祸害,水蛇,水螅
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- A constellation in the Southern Hemisphere near Hydra and Vela.
唧筒星座南半球靠近长蛇星座和船帆星座的一个星座收藏 - A coelenterate,such as a hydra or coral,having a cylindrical body and an oral opening usually surrounded by tentacles.
水螅型珊瑚虫，水螅虫一种有柱状身体和通常被触角包围的口部开口的腔肠动物，比如水螅或珊瑚虫收藏 - An asexual reproductive structure,as in yeast or a hydra,that consists of an outgrowth capable of developing into a new individual.
芽体一种无性再生结构，如酵母或水螅，包含有一个外部生长物，可以发育成一个新的个体收藏 - A constellation in the Southern Hemisphere near Hydra and Corvus.
巨爵座南天球的一个星座，位于长蛇座和乌鸦座附近收藏
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