尽管工具与激励都有了，但要使得自底向上的方法流行起来还是有相当的难度。
But even if the tools and incentive exists, to make the bottom-up approach widespread is difficult.
德黑兰方面没有在最后期限之前回应西方国家去年10月提出的以伊朗停止铀浓缩活动为交换条件的一揽子激励措施，本次会议是自那以来召开的首次此类会议。
The meeting was the first of its kind since Tehran missed a deadline to respond to a package of incentives offered in October by western nations in exchange for Iran halting uranium enrichment.
1961年，受到美国第一位太空人艾伦·谢泼德的激励，一位来自芝加哥郊区的14岁女孩给美国航空航天局写信询问自己怎样才能成为一名宇航员。
Inspired by Alan Shepard, the first American to journey into space, a 14-year-old from suburban Chicago wrote a letter to NASA in 1961 asking what she needed to do to become an astronaut.
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