经济研究应旨在为现实世界的决策提供信息。
海洋不仅是一种资源;它是我们必须为子孙后代承担的责任。
你不能害怕失败。这是你成功的唯一途径。
I have always wished for my computer to be as easy to use as my telephone; my wish has come true because I can no longer figure out how to use my telephone.