Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.

树木的年轮和季节性沉积被称为年变层，可计算用于确定绝对年龄。

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Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.

树木的年轮和季节性沉积被称为年变层，可计算用于确定绝对年龄。

youdao