Stereocenter
立構(gòu)(規(guī)正)中心
??? 情景例句
So far so good.
到目前為止一切都好。
As the touchstone tries gold, so gold tries man.
試金石可以試金，正如黃金可以試人。
Now is as good a time as any.
就現(xiàn)在好了。