marsh andromeda
【植物】小石南(生长于泥炭沼泽中的一种常绿小灌木)

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Thomas Henry Huxley May 5,1883 I beg leave to thank you for the extremely kind and appreciative manner in which you have received the toast of Science.It is the more grateful to me to hear that toast proposed in an assembly of this kind,because I hav

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听美文故事记6级单词

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超大质量黑洞

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How heavy is the Milky Way in comparison to its neighbor galaxy, Andromeda? Well, depends how you calculate it. In 2006 one group of astronomers figured the Milky Way was twice as massive as Andromeda. A 2009 estimate evened the score, calculating th

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Step by Step 3000 第二册

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学英语单词

-sia

aguas formosas

air-swept pulverizer

alizarin direct blue a

Bacillus amylolyticus

bataunt