He became a walking encyclopedia on dolphins and, to his family's amazement, braved his speech impediment to become a volunteer tour guide.

后来，他竟成了一部海豚百科全书。令其家人惊诧不已的是，他又向语言障碍发起挑战，而成了一名志愿导游。

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"Scott Valley is the best place in the world to grow up and the hardest place in the world to find a job," said Maxine, the friendly volunteer who was our guide in the tiny Etna Museum.

马克西是埃特纳博物馆的导游志愿者，是个很友善得人，他向我们介绍说：“斯科特山谷是世界上最好的居住之地，同时也是世界上最难找工作的地方。”

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Catherine, who was a brownie and a girl guide, joined the scouts in 2012 as a volunteer and helps out at a group close to her home in North Wales.

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As a renowned explorer, tour guide, archaeologist and volunteer firefighter, Vaughn knows the country and its stories better than anyone else.

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