var allTextNodes = document.createTreeWalker(document.body, NodeFilter.SHOW_TEXT),
    tmptxt,
    tmpnode,
    cakeRE = /唯一|领先|第一|一流|首个|卓越|绝对|首次|首选|独家|独有|最|极|填补国家空白|金牌|首发|独一无二|绝无仅有|王牌|领袖|至尊|无敌|完美|领头羊|领头|全方位|极限|带头人|自主知识产权|领导者|引领|首先/g
    replaceValue = "";

while (allTextNodes.nextNode()) {
    tmpnode = allTextNodes.currentNode;
    tmptxt = tmpnode.nodeValue;
    tmpnode.nodeValue = tmptxt.replace(cakeRE, replaceValue);
}