Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.
可以
树木的
轮和被称为纹泥的季节性沉积物
数来
定其
龄。
融积层；融积雪（varve的复数）Tree rings and seasonal sedimentary deposits called varves can be counted to determine absolute age.
可以树木的轮和被称为纹泥的季节性沉积物数来定其龄。
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