Arizona Republicans say the state needed to take action because U.S.officials have failed to enforce existing laws that could stop the flow of illegal immigrants from Mexico.

VOA: standard.2010.05.08

When we do "flow". Flow is the state where we are excited, where we are engaging what we are doing, " where it's much more than being "comfortably numb".

当我们“沉迷“之时，那就是我们感到兴奋，为所做之事着迷的状态，那样大大超越了“舒适地麻木。

哈佛公开课 - 幸福课课程节选