格雷厄姆开始剧烈地咳嗽。
那个问题被鲍勃·格雷厄姆和戴维·凯恩斯冷酷无情地提了出来。
That issue is presented starkly and brutally by Bob Graham and David Cairns.
格雷厄姆教练知道，只有一种方法可以教会孩子如何让它变得更强：你给他们做不到的事情；他们努力练习，直到发现自己可以做到，而你只需要不断地重复。
Coach Graham knew there was really only one way to teach kids how to make it stronger: You give them something they can't do; they work hard until they find they can do it, and you just keep repeating.
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