但在其他时候，他显得暴躁、迟疑甚至脆弱。
Yet in other moments he seems petulant, tentative and even frail.
你甚至会在你了解的事情上感到迟疑；表现出来但不要太声张，你想要说服别人就必须相信自己。
Even where you are sure, seem rather doubtful; represent, but do not pronounce, and if you would convince others, seem open to conviction yourself.
我们也会有犹豫不决、迟疑，甚至跌倒的时候。
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