In thalidomide, for example, the chiral center is a carbon atom attached to one of the rings.

例如在萨力多胺中，手性中心是一个吸附在一个结构环上的碳原子。

These groups are kind of like your fingers: in each enantiomer, the groups are attached to the chiral center in the opposite order, so they’re mirror images of each other.

这些基团有点像你的手指： 在每个对映异构体中，这些基团以相反的顺序附着在手性中心， 所以它们是彼此的镜像。

If you position the version of the molecule that's considered " right-handed" , called the R enantiomer, so the closest oxygen atom to the chiral center is below it, the hydrogen atom attached to the center will be facing away from you.

如果你找到了认为是“右撇子”的分子变体，即R对映体，那么离手性中心最近的氧原子就在它的下方，附在中心的氢原子将背朝你。