W HEN JON GERRARD reaches the rim of the bald eagle nest, the spruce needle-blanketed forest floor lies more than 20 metres below. For many, a healthy fear of heights might have kicked in around metre 10 of the climb, but white spruces are thick with branches and, says Gerrard, more or less like ladders.
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机译：When Jon Gerrard到达秃鹰巢的边缘，云杉针覆盖的森林地板占地20多米。 对于许多人来说，健康的高度恐惧可能已经踢了10米的爬升，但是白色刺激性厚厚的树枝，杰拉德说，或多或少像梯子。
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