You can tell the age of a tree by counting its rings, but these records of trees' life really say a lot more.

你可以通过数年轮来判断树木的年龄，但是作为树木生命的记载，年轮能说明的东西远不止于此。

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Possible nodes on the tree would be age, income level, current number of cars, mariatl status, kids, homeowner, or renter.

这个树上的节点可以是年龄、收入水平、目前拥有的车的数量、婚姻状况、有无孩子、房主还是租户。

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So, by measuring the ratio of the two isotopes in the rings of trees, and matching the result to the age of the ring, a history of hurricanes spanning the life of the tree can be reconstructed.

因此，通过测量树的不同年轮(ring)中两种氧同位素的比例，并将结果比对年轮所显示的树龄，就可再现树木一生中所经历的所有飓风。

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Those at the top of the management tree now, those around the age of 60, will have been born in the early 1950s.

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Once the sole province of young boys and Ewoks, tree houses offer adventurous travelers (read: unafraid of heights) a unique travel experience in an age of roadside motel chains and globe-stretching hotel corporations.

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