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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
gag
gaga
pursue
pursuer
pursuit
purulent
purvey
purview
purée
pus
push
push ahead
push around
push aside
push away
push back
pushback
push back supper
push bike
push-button
pushcart
pushchair
pushed
pusher
push factor
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：2026/5/14 19:30:18