In the book, we meet John Muir as a youth fearlessly climbing the roof of his house.

在这本书中，我们看到约翰·缪尔作为一个年轻人无畏地爬上了他家的屋顶。

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The great 19th century explorer John Muir once said: “Only by going alone in silence, without baggage, can one truly get into the heart of the wilderness.

19世纪伟大的探险家约翰•缪尔曾说道：“只有在独自悄然离开，不带背包的情况下，人们才能真正体会到狂野的心。

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I only went out for a walk and finally concluded to stay out till sundown, for going out, I found, was really going in. -john muir.

我本来只是出去走走，结果决定待到天黑再回去，因为我发现，出走竟是返我。

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But Syria itself is hardly in a position to do much, says the BBC's Jim Muir in Beirut.

BBC: White House warns Syria over 'weapons to Hezbollah'

Syria's decision to agree an extension of the mission is not a surprise, reports the BBC's Jim Muir in Beirut.

BBC: Syria agrees to extend Arab League observer mission

The level of devastation seen would have been difficult to achieve by conventional shelling, the BBC's Jim Muir in Beirut says.

BBC: Syria 'in contravention' of peace plan, says UN chief