adumbral

This paper introduces the effect and using status of adumbral technology.

介绍了遮阳技术的作用和使用状况；

Well here is a passage from a letter from a gentleman to his friend in Adumbral that Hume wrote in1775.

这里有一段文章，是休谟于1775年写给他在阿杜巴拉一位朋友的书信。

The context of this was that Hume was applying for a chair in moral philosophy at Adumbral and the clergy at Adumbral was very much against him.

内容是休谟向阿杜巴拉大学申请道德拉哲学教授的职位，但是阿杜巴拉的神职人员对他非常反感。

It supplies the research methods and tools of adumbral technology.

给出了目前遮阳技术的研究状况、研究方法和研究工具以及遮阳设计中应该考虑的问题；