单词	ammonia nitrogen
释义	ammonia nitrogen noun : nitrogen combined in the form of ammonia or ammonium Word History First Known Use 1883, in the meaning defined above
随便看	nature printing nature reserve nature study nature trail natured natureopathy natures naturing naturism naturisms naturist naturistic naturists naturopath naturopathic naturopathies naturopaths naturopathy natya Naucalpan naucalpan de juárez nauches nauchs naucleae naucleas

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