子(zǐ )目录二级目录(lù ),就是(shì )子目录,继承在主站目录(lù )下(xià )的,相(xiàng )当于在网站(zhàn )的根(gēn )目(mù )录(lù )下再建(jiàn )立一个文件(jiàn )夹(jiá )存放(fàng )网站目录(lù )可分为(wéi )多(duō )个级(jí )别一(yī )级目录就是大标题,二级目(mù )录就是大标(biāo )题(tí )下的小(xiǎo )标题,三(sān )级目录就是二级目(mù )录(lù )的小(xiǎo )标题以(yǐ )此(cǐ )类推
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