penumbra

英 [pəˈnʌmbrə]

美 [pəˈnʌmbrə]

n.  (黑暗与光明之间的)半影; (偏食期间的)半影

复数：penumbras　

GRE化学

BNC.41556 / COCA.28764

牛津词典

noun

• （黑暗与光明之间的）半影
  an area of shadow which is between fully dark and fully light
• （偏食期间的）半影
  the shadow made by the earth or the moon during a partial eclipse

柯林斯词典

• 半影；半阴影
  Apenumbrais an area of light shadow.

英英释义

noun

• a fringe region of partial shadow around an umbra

双语例句

• Effects of Smoking on Cell Apoptosis and Expression Level of Fos Protein in Rat Brain Ischemic Penumbra
  吸烟对大鼠局灶性脑缺血半暗带内细胞凋亡及Fos蛋白表达的影响
• Conclusion HSP70 was sensitive marker of ischemic damage, the anatomic distribution of HSP70 expression could be thought as ischemic penumbra.
  结论HSP70是缺血神经元损伤的敏感指标，缺血皮层区HSP70表达的解剖分布可能相当于半影区。
• Assessment of ischemic penumbra in patients with cerebral infarction by radionuclide brain imaging
  脑核素显像对脑梗塞患者缺血半暗带的评价
• Effects of folic acid, vitamin B_6 and vitamin B_ ( 12) on ischemic penumbra in cerebral ischemia rats
  叶酸联合维生素B6/B（12）对脑缺血半暗带区影响
• Penumbra is a very unusual game series, developed by Swedish developer Frictional Games.
  《半影》是由瑞典游戏开发公司FrictionalGames开发的一个非凡的系列游戏。
• The goal of reperfusion therapy is restoration of normal CBF in hypoperfused yet viable brain tissue ( ischemic penumbra)( 2 – 7).
  再灌注治疗的目的是使灌注不足但仍存活的脑组织的血流量恢复正常（缺血半影区）（2-7）。
• Up-regulation of electroacupuncture on the expression of neuroglobin in cortical penumbra of MCAO rats
  电针上调MCAO大鼠皮质缺血半暗带脑红蛋白的表达
• Downtown Chicago and its penumbra also stand rejuvenated ( John McCormick)
  芝加哥城商业中心及其周边地区都恢复了生机（约翰麦考密克）
• I have always worked right at the border of the light and the penumbra.
  我总是工作在光亮和半影的交界处。
• We thought about optimism and pessimism, which was then the province of preachers and politicians and the like, in the penumbra and brought the same what was in the light from science to bear on that.
  我们想到了乐观主义和悲观主义，这是传教士和政客这类人的地盘，还是半影中，我们又从科学中已经知道的来瞄准它。