int.O>(感叹词)O><Ol slider="2">
哎呀（表示惊讶、痛苦、恐惧、赞叹等）Ol>abbr.O>(缩略词)O><Ol slider="2">=Old老的，旧的Ol>adj.O>(形容词)O><Ol slider="2">第十五的Ol>n.O>(名词)O><Ol slider="2">零，没有东西，无英语字母的第十五个字母O，O字形物，椭圆形物O铅字或图章等O，O所表示的读音，它们的书面形式【化】元素氧的符号表示第十五的符号Ol>
NOun:<
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a nOnmetallic bivalent element that is nOrmally a cOlOrless OdOrless tasteless nOnflammable diatOmic gas; cOnstitutes 21 percent Of the atmOsphere by vOlume; the mOst abundant element in the earth's crustthe 15th letter Of the ROman alphabetthe blOOd grOup whOse red cells carry neither the A nOr B antigens;"peOple with type O blOOd are universal dOnOrs"
Ol>
