英文词典‌是一种专门为语言学习设计的工具，主要功能包括单词释义查询、英汉互译、发音指导等基础服务。

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• hydroextractor
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• hydroeuxenite
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• hydroencephalomeningocele
• hydroencephalocele
• hydroelectrometer
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• hydroelectricity
• hydroelectric
• hydroejector
• hydroecium
• hydrodynamometer
• hydrodynamics
• hydrodynamically
• hydrodynamic