telescopes

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C2 高級
n. pl.名詞 (複數)望遠鏡

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探索抽象的黑暗天空(In Search of Pure Dark Skies)

05:55探索抽象的黑暗天空(In Search of Pure Dark Skies)

為何夜晚總是黑暗 Why is it Dark at Night?

03:53為何夜晚總是黑暗 Why is it Dark at Night?