英语语法分析

Walking is faster than crawling, so this motivates expert crawlers to transition to walking.

行走比爬行快，所以这促使爬行专家转向行走。

For instance, many babies are perfectly proficient crawlers, but they decide to try walking because there's more to see and do when they stand upright.

例如，许多婴儿都能非常熟练地爬行，但他们却决定尝试行走，因为当他们站直时，有更多的东西能看和做。

Making the sitemap accessible to crawlers.

使站点地图能被爬虫程序访问。