新昌硅化木中有明显的树木年轮，表明这种古气候可能存在一定的季节变化。
Visible tree rings of the Xinchang Petrified Wood indicate that there might be some seasonal changes in the ancient climate.
新昌硅化木中有明显的树木年轮，表明这种古气候可能存在一定的季节变化。
Visible tree rings of the Xinchang Petrified Wood indicate that there might be some seasonal changes in the ancient climate.
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