在他书中涉及到三个主要人物：史蒂夫·西莱特（Steve Sillett），现于洪堡州立大学（Humboldt State University）任红木林生态学教授，开创过“天空漫步”的攀树方法；

His book revolves around three main characters: Steve Sillett, now a professor of redwood-forest ecology at Humboldt State University, who pioneered the "skywalking" method of tree climbing;

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