蜘蛛是一种半自动的程序，就象现实当中的蜘蛛在它的Web（蜘蛛网）上旅行一样，蜘蛛程序也按照类似的方式在Web链接织成的网上旅行。-Spider is a semi-automatic process, just as reality the spider in its Web (web) on the trip, like a spider in a similar way also in accordance with Web links woven into the online trave