She began to research playground equipment and found many experts touting the benefits of 'back to nature' unstructured play.

VOA: standard.2010.06.25

So the three of us would have a casual and unstructured conversation with the president in what direction he wanna to go.

所以我们三个会随便地,没有系统地聊一下,总统想说什么就说什么。

普林斯顿公开课 - 国际座谈会课程节选