tōng guò / fēn xī / gào shí / de / nián líng / dì zhì xué jiā / tuī cè / zhè piàn tǔ dì / shǔ yú / gǔ lǎo / de / kè lā tōng

通过分析锆石的年龄，地质学家推测这片土地属于古老的克拉通。

By analyzing the ages of zircon, geologists inferred that this land belongs to an ancient craton.