There is technical access, just how do you get to the site and then there is cultural access.

技术上的接触，也就是你如何进入到这个网站,还有文化上的接触。

麻省理工公开课 - 媒体、教育、市场课程节选

How do you get there? You go to go here, here and these could be busy roads, and so parents don't want to do it because of safety reasons, so you see how--when the country used to be laid out in a grid, like say New York City still is today, then people walk to get to places.

那要怎么才能去呢,你得绕道这里,还有那里的繁忙路段,出于安全原因家长们不允许孩子们这么做,可以看到,规划为网格状道路的地区,比如依旧保留了传统规划的纽约,人们出行是靠步行

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选