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	rowdily rowdiness rowdy rower rowing-boat rowlock royal royal blue Royal Commission Royal Highness royalist royal jelly royally royalty rpm R, r RRP RSA RSC RSM RSPB RSPCA RSV RSVP Rt Hon

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