英文英文字典
英文英文字典
古腾堡计划中的在线英语-英语词典
结果
Umbra的结果
Umbra
(n.)
The conical shadow projected from a planet or satellite, on
the side opposite to the sun, within which a spectator could see no
portion of the sun's disk; -- used in contradistinction from penumbra.
See Penumbra.
Umbra
(n.)
The central dark portion, or nucleus, of a sun spot.
Umbra
(n.)
The fainter part of a sun spot; -- now more commonly called
penumbra.
Umbra
(n.)
Any one of several species of sciaenoid food fishes of the
genus Umbrina, especially the Mediterranean species (U. cirrhosa),
which is highly esteemed as a market fish; -- called also ombre, and
umbrine.