It invested billions of dollars in stadiums,transportation hubs, security and communications.

VOA: standard.2010.06.07

Some people in this room might be hubs, and it is not impossible to find out.

这个教室里可能就人这样的人，要找出来很简单。

耶鲁公开课 - 心理学导论课程节选

Some people are hubs.

有些人就像这些交通枢纽。

耶鲁公开课 - 心理学导论课程节选

Air traffic used to be everything flew to places local to it but now there's a system of hubs, Chicago O'Hare for instance or Newark where planes fly through.

以前的飞机都是飞往它的所属地,但现在的航空运输是一个由交通枢纽组成的系统，例如飞机会途经芝加哥O'Hare机场或Newark机场。

耶鲁公开课 - 心理学导论课程节选