As an essential element in tort liability, the causation plays a very important role undoubtedly.

作为侵权责任的构成要件，因果关系的重要地位不容质疑。

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Production planning was seen as an essential element in improving efficiency. Why might that be the case?

生产计划的编制被认为是提高效率的关键因素，为什么？

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When your organization has achieved this, it's a major milestone that demonstrates the importance of estimates as an essential element of a successful project.

组织实现这一点时，就到达了一个重要的里程碑，可充分说明评估作为项目成功的主要元素的重要性。

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However, as was the case for the Reagan recovery, a strong dollar was an essential element of Clinton's prosperity program.

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