·1二级目(mù )录(lù )泛(fàn )站主(zhǔ )页(yè )连接 黑帽SEO技术站群(qún )之(zhī )间做连接,底子都(dōu )是单向(xiàng )连(lián )接,具(jù )体单(dān )向连接是(shì )不是查找(zhǎo )引擎会当作采购的连(lián )接而赏(shǎng )罚尚(shàng )不可知,不过(guò )依据查找(zhǎo )引(yǐn )擎的一些(xiē )体现(xiàn ),好像对单向连接(jiē )有必(bì )定的办(bàn )法很明(míng )显的一个比(bǐ )如是检索(suǒ )quot
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