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单词
penumbra
释义
penumbra
noun
countable
UK
/
pəˈnʌmbrə
/
Word Forms
singular
penumbra
plural
penumbras
DEFINITIONS
1
1
an area covered by the outer part of a shadow, so that it is not completely dark
Synonyms and related words
The outer parts of objects or spaces
apex
back
back end
penumbra
noun
countable
physics
US
/
pəˈnʌmbrə
/
Word Forms
singular
penumbra
plural
penumbras
DEFINITIONS
1
1
an area covered by the outer part of a shadow, so that it is not completely dark
Synonyms and related words
The outer parts of objects or spaces
apex
back
back end
随便看
bottle it
bottleneck
bottle opener
bottle out
bottler
bottle shop
bottle up
bottom
bottom drawer
bottom feeder
bottom gear
bottomland
bottomless
bottomless brunch
bottom line
bottommost
bottoms up
bottom-up
botulism
bouclé
boudoir
bouffant
bougainvillea
bough
bought
英语词典包含67175条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。
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更新时间：2025/2/26 0:15:03