然而，南亚各国正逐步认识到，兑现养老金非常昂贵。

But South Asian countries are coming to the realization that delivering on these pensions is very expensive.

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就大多数心理特征而言，科学家们逐步认识到，我们的基因和环境在同样影响着我们。

But with most psychological characteristics, scientists are learning that both our genes and our environment affect us.

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慢慢地，美国科学家和许多在美国工作的外国的科学家，逐步认识到这个问题在军事方面的重要性。

Slowly American scientists, and many foreign scientists working in the United States, came to understand the military importance of the problem.

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