3325英语网 英语单词
Penumbra的音标发音
Penumbra
英式发音：[pi'nʌmbrә]
美式发音
(noun.) a fringe region of partial shadow around an umbra.
巴贝奇录入
双语例句
- Hence during a lunar eclipse the moon first enters the penumbra, then is totally eclipsed by the umbra, then emerges through the penumbra again. 佚名. 神奇的知识之书.
校对:桑福德