If the scientist has not worked hard to develop his knowledge and skills, he may not recognize that lucky breakthrough when it comes along.
如果科学家没有努力提升他的知识和技能，当幸运的突破来临之时他可能会意识不到。
The forum will facilitate an analysis of what works, of what has not worked and why, and of how to accelerate progress.
论坛将促进分析哪些对策有效，哪些对策无效，原因何在，以及如何加速进展。
Mark Doyle, who's reported from Africa for many years, looks at why aid is necessary, and why much of what's been donated in the past has not worked.
马克·多伊勒是一位在非洲工作了多年的记者。他将会探讨为什么一定要给非洲援助，以及为什么以前给予非洲的大部分援助都没有起到作用。
After all, these 50 years have shown that isolation has not worked. It's time for a new approach.
毕竟，50年的孤立政策已被证明无效，现在是采用新方法的时候了。
On top of that, Jim has not worked for great leaders in his career and lacks formal management training.
除此之外，吉姆在职业生涯当中也没有为伟大的领导者工作过，而且缺乏正规的管理培训。
The existing model for the mobile internet business has not worked and is already showing signs of strain.
手机网络业务的现有模式已经不起作用，而且已经呈现出过度紧张的迹象。
And this traditional business model has not worked very well on the Internet, especially not in a bad economy.
而且这种传统的商业模式在互联网上也收效不好，尤其是在这经济低迷的时候。
For a man may do his work with wisdom, knowledge and skill, and then he must leave all he owns to someone who has not worked for it.
因为一个人凭智慧、知识、技能所辛苦得来的，竟要留给那些未曾付出努力的人。
I'm discussing the progress we are making, the lessons we have learned from our experience, and how we are fixing what has not worked.
目前我正在讨论的是我们所取得的进展，我们从过去的经历中得到的教训，以及我们对于那些未能奏效的措施所做的补救。
'While we initially received optimistic reports about the (top kill) procedure, it is now clear that it has not worked,' Obama said in a statement.
“虽然我们起初接受有关灭顶法的乐观报告，但是很明显，它不起作用，”奥巴马在声明中表示。
"A large sanctions effort has been under way against Iran for some time. It has not worked to curb Tehran's nuclear appetite, and it will not," he said.
“实行针对伊朗的大规模制裁行动已经有一段时间了，却并没有遏制住德黑兰的核野心，以后也不会奏效，”他说。
But it did not deal with the underlying faults in the single currency, which has not worked as hoped to promote convergence among its members' economies.
但它没能处理单一货币的固有缺陷，欧元并没有如希望的那样促进其成员的经济趋同。
But it did not deal with the underlying faults in the single currency, which has not worked as hoped to promote convergence among its members' economies.
但它没能处理单一货币的固有缺陷，欧元并没有如希望的那样促进其成员的经济趋同。
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