| 释义 |
umbraBrE /ˈʌmbrə/NAmE /ˈʌmbrə/ noun (um·bras or um·brae BrE /ˈʌmbriː/ NAmE /ˈʌmbriː/ ) (specialist) the darkest part of a shadow 本影（影子中光源完全照射不到的部分）the area on the earth or the moon which is the darkest during an eclipse （日食或月食期间地球或月球的）本影 ➡ compare penumbra |