Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.
可以对树木和被称为纹泥季节性沉积物进行计数来确定绝对龄。
Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.
可以对树木和被称为纹泥季节性沉积物进行计数来确定绝对龄。
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