kē xué jiā / zài / zhèn dàn jì / de / yán céng / zhōng / fā xiàn / le / gǔ lǎo / de / shēng mìng / hén jì

科学家在震旦纪的岩层中发现了古老的生命痕迹。

Scientists have discovered traces of ancient life in the Sinian rock layers.