kē / xué / jiā / tōng / guò / yán / jiū / dì / zhì / nián / biǎo / lái / tuī / duàn / gǔ / dài / qì / hòu / de / biàn / huà

科学家通过研究地质年表来推断古代气候的变化。

Scientists infer changes in ancient climate by studying the geological time scale.