竞争压力越来越大，唯有寻到独特的经营理念才能在这个大环境里生存下去。

The competitive pressure is more and more large. Only the person who found a unique operation idea can survive in this large environment.

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所以，基于应力波的木材检测技术的前景是十分广阔的，本文正是在这个大环境的驱动下开始这项研究的。

Therefore, the foreground of wood testing technology which based on stress wave is broad; and this paper begins with such situation.

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So the book is really an effort to answer what role America should play in the world.

这本书事实上是在试图,回答美国在世界这个大环境中应该扮演怎样的角色。

普林斯顿公开课 - 国际座谈会课程节选