RD: I know you're working on a programme about Cambrian and pre-Cambrian fossils, David.
理查德·道金斯：大卫，我知道你正在做一个关于寒武纪和前寒武纪化石的专题节目。
2
Some researchers have pointed out the key to the regional correlation of the upper Pre-cambrian in South Liaoning is how to link and correlate with Jixian and Xiadong stratotypes.
辽南上元古界的区域对比的关键是如何与蓟县层型、峡东层型的衔接或对比。
3
Therefore the deficiency of pre-Cambrian fossil and the sudden emergence of Cambrian trilobite are like a double edged sword posing threat for the very foundation of Darwin evolutionism.