| 释义 |
umbra/ˈʌmbrə/n. (pl. umbras or umbrae /-bri:/) 1 the fully shaded inner region of a shadow cast by an opaque object, esp. Astron. the area on the earth or moon experiencing the total phase of an eclipse (cf. 参见 PENUMBRA 1a) 荫；阴影；(尤)【天】本影，暗影 2 the dark central part of a sunspot (指太阳黑子的)中央黑暗部 □ umbral adj.[Latin, = shade] |