未经尝试的事情，永远不要说你做不到。
奥巴马先生计划倚重许多未经尝试的机制，来管住健康保障费用的膨胀，但是却未提及联邦健康保障费用的问题。
Mr Obama's is to rely on a handful of largely untried mechanisms to cap health-care inflation without targeting the overall federal health-care bill.
但是美国的状况相当特殊，他所需要的顾问必须愿意尝试崭新、未经证实的想法，也就是罗斯福的试验。
But America's circumstances are sufficiently exceptional that he will need advisers who are willing to try new, untested ideas - in other words, experimentation a la FDR.
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