Many scientists go their entire careers without the satisfaction of making such a significant contribution to their field.

许多科学家穷尽一生职业生涯，也没有能在他们的领域中做出这么重大的贡献，让他们自己满意。

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Women would not be where they are today, or able to reach their goal for tomorrow, without Regina's contribution.

没有雷吉娜的贡献。 女人们不会有着今天的地位，也不能实现她们明天的目标。

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But families with less income can mentor their children through the process without matching their contribution.

FORBES: Fund a Teenager's Million-Dollar Retirement

Co-operation would nonetheless quickly break down if individuals could enjoy the advantages of division of labour without making a contribution of their own.

ECONOMIST: Economics focus

Many open people spend their careers without thinking much about what they're accumulating in their pensions and defined-contribution savings plans.

WSJ: How Emotions Affect Your Investing