楼上(shàng )说的很多(duō ),我(wǒ )补(bǔ )充一下,正确的应该叫网络蜘蛛(zhū ),又(yòu )称(chēng )爬(pá )虫,本质是搜索引擎派出的一(yī )个执行抓(zhuā )取任(rèn )务(wù )的程序蜘(zhī )蛛池的本质(zhì )是大量(liàng )的网站互相链(liàn )接,每个站单(dān )独产生(shēng )大量(liàng )的内容(róng )吸引蜘蛛(zhū )来(lái )爬,几(jǐ )千个网站(zhàn )互链(liàn )时(shí ),可以想象蜘蛛的链(liàn )接
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