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useful concept

useful concept

useful concept

useful concept

1

And I think it's a more useful concept than sustainability , as I said .

我认为可恢复性理论比可持续理论更有用，正如我所说。

3

And I think , in many ways, the idea of resilience is a more useful concept than the idea of sustainability .

我认为，在多方面，这种可恢复性理论比可持续理论更有用。

4

The elasticity of substitution is a useful concept in several areas of economics .

置换弹性在若干经济学领域内是一个有用的概念。

5

In these circumstances opportunity cost is a less useful concept.

在这些情况下，机会成本起的作用很小。

6

Another useful concept is the personal checklist .

另外一个有用的概念就是个人检查表。

8

Bostrom: I don't think that perfection is a useful concept .

博斯特罗姆：我认为完美不是一个有用的概念。

9

I think it is a very good useful concept .

我认为这是一个很好的有用的理念。

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