The text boxes in the left panel have been placed in a random order. Restore the original order by dragging the text boxes from the left panel to the right panel.
左栏的文本框排列顺序是乱的。请把它们拖到右栏,恢复成原文的正确顺序。
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1However, when archaeologists want to know the absolute date of a site, they can often go beyond simple stratigraphy.
2Historical records, coins, and other date-bearing objects can help - if they exist. But even prehistoric sites contain records - written in nature's hand.
3For example, tree rings, Dendrochronology (literally, tree time‖) dates wooden artefacts by matching their ring patterns to known records, which, in some areas of the world, span several thousand years.
4The series of strata in an archaeological dig enables an excavator to date recovered objects relatively, if not absolutely.
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