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Black Holes What is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientist

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有声英文阅读

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What is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region of space (not a thing) i

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双语有声阅读

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健康与经济

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【原文】 Black HolesWhat is a black hole? Well, it's difficult to answer this question, since the terms we would normally use to describe a scientific phenomenon are inadequate here. Astronomers and scientists think that a black hole is a region

发表于:2019-02-16 / 阅读(32) / 评论(0)

英语听力广播—Listening

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学英语单词

a-c magnetic biasing

acid scouring

Agamodistomum ophthalmobium

albertosaurus

an empty street

anillo

applying preventive by dipping

artificial ground water

Ashino

attantite

auty