恐龙以及恐龙的消失是侏罗纪的标志，人类或许也会像它们那样定义一个地质时期。
Human may define a geological period in the way dinosaurs — and their vanishing act — helped mark the Jurassic.
如果团体的成员身份的其他标志可以被强化，那么传统的标志即使不完全消失，也会弱化。
If other brands of group membership can be strengthened, the traditional ones may diminish, even if they do not disappear completely.
这是一个最有价值的东西：它的消失标志着我们做事更加自信，一个最重要的因素使我们在生活中取得成功。
That is the most useful thing about it: its disappearance marks our progress towards self-confidence, one of the greatest helps towards success in life.
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