The most advanced portion of the human race were halted, so to express it, at certain stages of progress.
人类中最先进的一部分,当其处在进步过程的某一阶段时,似乎停步不前。
N-UNCOUNT. 优生学;人种改良学. Eugenics is the study of methods to improve the human race by carefully selecting parents who will produce the strongest children.
Mark Twain was a determinist. Yet he never ceased to scold the human race.