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单词	nitrobacterium
释义	nitrobacterium noun ni·​tro·​bac·​te·​ri·​um ¦nī-(ˌ)trō-bak-¦tir-ē-əm  plural nitrobacteria ¦nī-(ˌ)trō-bak-¦tir-ē-ə  : nitrifying bacterium Word History Etymology New Latin, from nitr- + bacteria
随便看	option option to buy optional optional pass optional referendum optional writ optionalities optionality optionalize optionally optionals optionary optioned optionees optioning options optive opto- optoelectronic optoelectronics optokinetic optologists optometers optometric optometries

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。