1. From the perspective of URL, the secondary domain name is more trustworthy than the secondary directory in essence. However, from the perspective of search engine ranking, it is recommended to use subdirectories instead of secondary domain names as much as possible.

2.二級(jí)域名和一級(jí)域名是兩個(gè)完全不同的網(wǎng)站，相當(dāng)于兩個(gè)要推廣的網(wǎng)站。所有網(wǎng)絡(luò)營(yíng)銷(xiāo)工作都必須再次進(jìn)行。網(wǎng)站的公關(guān)價(jià)值和信任度將被這兩者分開(kāi)。該站點(diǎn)是分散的。使用二級(jí)域名將增加網(wǎng)站的數(shù)量，但同時(shí)會(huì)使網(wǎng)站變小。子目錄將使網(wǎng)站變得越來(lái)越大。搜索引擎優(yōu)化的非常重要的一點(diǎn)是網(wǎng)站的內(nèi)容以及網(wǎng)站本身的質(zhì)量和實(shí)力。網(wǎng)站的大小是重要的指標(biāo)之一。

2. The secondary domain name and the primary domain name are two completely different websites, equivalent to two websites to be promoted. All network marketing work must be carried out again. The public relations value and trust of the website will be separated by the two. The site is decentralized. Using secondary domain names will increase the number of websites, but it will also make the website smaller. Subdirectories will make the website bigger and bigger. A very important point of search engine optimization is the content of the website and the quality and strength of the website itself. The size of the website is one of the most important indicators.

3.對(duì)于搜索引擎，第二級(jí)域名屬于一個(gè)獨(dú)立的網(wǎng)站，而子目錄實(shí)際上屬于主網(wǎng)站下的一個(gè)頁(yè)面。 二級(jí)域名和子目錄的權(quán)重較高。從理論上講，二級(jí)域名和子目錄在搜索引擎上的權(quán)重不高不低，但是對(duì)于不同的情況它們是不同的。對(duì)于新創(chuàng)建的子目錄和二級(jí)域名，子目錄更為重要，因?yàn)樗鼈儗⒗^承主網(wǎng)站的權(quán)重。對(duì)于搜索引擎，它與網(wǎng)站上的其他頁(yè)面沒(méi)有什么不同，并且將很容易被包含；

3. For search engines, the secondary domain name belongs to an independent website, while the subdirectory actually belongs to a page under the main website. Secondary domain names and subdirectories have higher weights. Theoretically, the weight of secondary domain names and subdirectories in search engines is not high or low, but they are different for different situations. For newly created subdirectories and secondary domain names, subdirectories are more important because they will inherit the weight of the main website. For the search engine, it is no different from other pages on the website and will be easily included;

二級(jí)域名起初非常重要，因?yàn)槎?jí)域名相當(dāng)于一個(gè)新網(wǎng)站，除非主域名很高，所以二級(jí)域名基本上類(lèi)似于一個(gè)新網(wǎng)站。如果它想被搜索引擎包括在內(nèi)。換句話(huà)說(shuō)，子目錄起初會(huì)比二級(jí)域名更好，但它們可能會(huì)朝相反的方向發(fā)展。

The secondary domain name is very important at first, because the secondary domain name is equivalent to a new website. Unless the primary domain name is very high, the secondary domain name is basically similar to a new website. If it wants to be included by search engines. In other words, subdirectories will initially be better than secondary domain names, but they may develop in the opposite direction.