单词	Protohydra
释义	Protohydra noun Pro·​to·​hydra "+ : a genus of marine coelenterates similar to Hydra but having no tentacles Word History Etymology New Latin, from prot- + Hydra
随便看	algorist algoristic algorithm algorithmic algorithmically algorithmics algorithms algors algous algraphy Algren alguacil alguaciles alguacils alguazil alguazils algum algums Alhagi Alhambra alhambraic Alhambresque ali Ali Ali Baba

英语词典包含469781条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。