penumbra background

penumbra

/pəˈnʌmbɹə/

Illustration penumbra - Image 1

noun

半影，伪影

A partially shaded area around the edges of a shadow, especially an eclipse.

Examples :

"During the solar eclipse, we could see a dim penumbra surrounding the darkest part of the moon's shadow. "

在日食期间，我们可以看到月亮阴影最黑暗的部分周围有一圈淡淡的半影。

astronomy physics space nature

Illustration penumbra - Image 1

noun

半影，伪影

A region around the edge of a sunspot, darker than the sun's surface but lighter than the middle of the sunspot.

Examples :

"The astronomer pointed out the penumbra around the sunspot, a region slightly darker than the surrounding surface but brighter than the core. "

天文学家指出了太阳黑子周围的半影区域，那里比太阳表面稍微暗一些，但比黑子的中心区域更亮。

astronomy physics space phenomena nature

Illustration penumbra - Image 1

Illustration penumbra - Image 2

noun

半影，边缘地带。

An area of uncertainty or intermediacy between two mutually exclusive states or categories.

Examples :

"The student's understanding of the topic was in the penumbra between knowing and not knowing; she could answer some questions, but struggled with others. "

这个学生对这个题目的理解处于一种似懂非懂的边缘地带；她能回答一些问题，但对另一些问题却感到吃力。

area aspect philosophy theory space

Illustration penumbra - Image 1

Illustration penumbra - Image 2

noun

半影，边缘，阴影部分

An area that lies on the edge of something; a fringe.

Examples :

"The sunlight filtering through the leaves created a penumbra of shifting shadows on the picnic blanket. "

阳光穿过树叶，在野餐布上投下了一片不断移动的阴影边缘.

area appearance physics astronomy

Illustration penumbra - Image 1

noun

边缘，半影，关联。

Something related to, connected to, and implied by, the existence of something else that is necessary for the second thing to be full and complete in its essential aspects.

Examples :

"The company's success cast a penumbra of opportunity onto the small town, bringing new jobs and increased prosperity that were dependent on the company's continued growth. "

公司的成功给这个小镇带来了机遇的间接影响，创造了新的工作岗位，并提高了经济繁荣，而这些都依赖于公司的持续发展。

aspect part theory philosophy abstract

Illustration penumbra - Image 1

noun

缺血半暗带, 半影带

(in "ischaemic penumbra", after a stroke) A region of the brain that has lost only some of its blood supply, and retains structural integrity but has lost function.

Examples :

"After the stroke, doctors worked quickly to save the penumbra, the area of Sarah's brain still potentially recoverable if blood flow could be restored. "

中风后，医生们争分夺秒地抢救缺血半暗带，也就是莎拉大脑中还有希望恢复的区域，如果能恢复供血的话。

medicine physiology anatomy organ body disease part biology biochemistry condition function