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1·That's what a keystone species does in an ecosystem.

那就是拱顶石物种在生态系统中的作用。

2·The government's determination to beat inflation has so far been the keystone of its economic policy.

政府对通货膨胀的坚决抑制迄今为止一直是其经济政策的根本。《柯林斯英汉双解大词典》

3·It might seem that certain traits would clearly define a species as a keystone species.

似乎某些特征会清楚地将一个物种定义为关键物种。

4·In architecture, a keystone in an archway or doorway is the stone that holds the whole thing together, and keeps it from collapsing.

建筑学中，拱道或门口的拱心石，是把建筑整体连接在一起来防止它倒塌的石头。

5·Because complex species interactions may be involved, identifying a keystone species by removing the species and observing changes in the ecosystem is problematic.

由于其中可能涉及复杂的物种相互作用，通过移除一个关键物种并观察生态系统的变化来确定该物种是有问题的。

6·Following are two of the major qualities that make up emotional intelligence, and how they can be developed: The ability to recognize a feeling as it happens is the keystone of emotional intelligence.

以下是构成情商的两个主要品质，以及如何培养这些品质：在情感发生时辨别情感的能力是情商的基石。

7·Taking the keystone for himself.

把楔石据为已有。

8·The keystone of success is hard work.

成功的基石在于努力工作。

9·This was the keystone of this research.

这是本文研究的重点。

10·The keystone. It will lead us to our final goal.

拱顶石！它将引导我们走向我们最终的目标。