umbra的甄选

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用“umbra”造句大全，umbra造句

用“umbra”造句大全，umbra造句

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1、lastcontactofumbra2、umbraandpenumbraofsunspot3、afringeregionofpartialshadowaroundanumbra.4、Thisisalighterareabetweentheumbraandtheedgeofashadow.5、Thisincludesthecontinuoussurveyofumbraandpenumb...