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The AIDS epidemic offers an example. The broad goal, of course, is to end the disease. The highest-leverage approach is prevention. The ideal technology would be a vaccine that gives lifetime immunity with a single dose. So governments, drug companies, and foundations fund vaccine research. But their work is likely to take more than a decade, so in the meantime, we have to work with what we have in hand – and the best prevention approach we have now is getting people to avoid risky behavior.
艾滋病就是一个例子。总的目标，毫无疑问是消灭这种疾病。最高效的方法是预防。最理想的技术是发明一种疫苗，只要注射一次，就可以终生免疫。所以， 政府、制药公司、基金会应该资助疫苗研究。但是，这样研究工作很可能十年之内都无法完成。因此，与此同时，我们必须使用现有的技术，目前最有效的预防方法 就是设法让人们避免那些危险的行为。
Pursuing that goal starts the four-step cycle again. This is the pattern. The crucial thing is to never stop thinking and working – and never do what we did with malaria and tuberculosis in the 20th century – which is to surrender to complexity and quit.
要实现这个新的目标，又可以采用新的四步循环。这是一种模式。关键的东西是永远不要停止思考和行动。我们千万不能再犯上个世纪在疟疾和肺结核上犯过的错误，那时我们因为它们太复杂，而放弃了采取行动。
surrender to
向…投降
1.Do not surrender to your enemy.
不要向你的敌人投降。
2.We should surrender to the demands of the customers
我们应该服从顾客的要求。
- If you surrender to me , I could give you all what you want.
如果你向我投降，我可以给你一切你想要的
The highest-leverage approach
最高效的方法
1.This is the highest-leverage approach we will take.
这是我们将采取的最高效的方法。
2.The highest-leverage approach of learning English is to repeat , repeat and repeat.
学习英语最有效的方法是重复，重复再重复
3.The highest-leverage approach of working is only do one thing at a time.
工作的最高效的方法是一次只做一件事。
The crucial thing
关键的事情
1.The crucial thing is to catch up with the train in time
关键是要及时赶上火车。
2.The crucial thing is that you must believe in yourself
关键是你必须相信自己。
3.For a company , the most crucial thing is innovation .
对于一家公司来说，最关键的是创新。
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