Phosphate and sugar are linked together to make backbone and complementary bases are attached on it.

磷酸和糖连接在一起，形成主干，互补的碱基连接在上面。

This simple sketch showing these two ribbons, antiparallel and complementary bases in between, it outlined the molecular nature of genetics and described the universal information carrying molecule for all life on Earth.

这个简单的草图显示了这两条丝带，它们之间是反平行和互补的碱基，它概述了遗传学的分子性质， 并描述了地球上所有生命的通用信息携带分子。