At that moment the Divers represented externally the exact furthermost evolution of a class, so that most people seemed awkward beside them--in reality a qualitative change had already set in that was not at all apparent to Rosemary.

在那一刻，Divers 表面上代表了一个阶级的最进一步进化，因此大多数人在他们身边显得很尴尬——实际上，已经发生了质的变化，而 Rosemary 根本看不出来。