英语词汇umbra的意思、用法及释义-英汉双解词典

单词	umbra
释义	umbra n (pl -rae or ~s) (astronomy 天) dark central part of the shadow cast by the earth or the moon in an eclipse, or of a sunspot 本影. Cf 参看 penumbra.
随便看	run up run-up runway rupee rupture rural rural dean rural delivery Ruritanian ruse rush rush-hour rushy rusk russet Russian Russian roulette Russo- rust rustic rustically rusticate rustication rusticity rustily

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