They're made up of multiple subunits of an organic molecule called isoprene, which has five carbon atoms.

它们是由多个有机分子亚基组成的，含有五个碳原子的异戊二烯。

They’re made up of multiple subunits of an organic molecule called isoprene, which has five carbon atoms. These subunits can be arranged in a line, or form rings, or both, leading to a diverse collection of over 30,000 known compounds.

它们由称为异戊二烯的有机分子的多个亚基组成， 异戊二烯具有五个碳原子。这些亚基可以排列成一条线， 或形成环，或两者兼而有之， 从而形成超过 30, 000 种已知化合物的多样化集合。