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随时随地学习
随时随地学习
Th sky is gtting dark,All clouds can't b sn.th sun has lost it's bright.suddnly, a black circul gt clos to th sun, it blocks part of it.Fw minuts latr ,It blocks all of th sun, th sky is as black as ink，Th sun is disappard ,just a bright round has tid on th sky.
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