They have discovered now, previously unimagined objects-pulsars, quasars, and black holes.
他们发现了以往想象不到的新客体 ― ―脉冲星 、 类星体和黑洞.
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Exploring Black Holes investigates these and many other questions using elementary calculus.
224探索黑洞会利用初等微积分研究这类问题.
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They have discovered now , previou sly unimagined objects-pulsars, quasars, and black holes.
他们发现了以往想象不到的新客体 —— 脉冲星 、 类星体和黑洞.
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Black holes can be seen via the death throes of the matter being sucked in.
经由正被吸引物质死亡阵痛能看见黑洞.
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四喜饺和鸳鸯饺的四孔和两孔可以放入不同颜色的蛋黄,黑木耳,青豆,红萝卜末。其它形状的饺子用不同的手法捏制而成。
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Thirsty zebras gather at water holes , circling them like necklaces of white-and-black beads.
口渴的斑马聚集在水坑处,如黑白 相间 的项珠环绕着.
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At day the holes in the aluminium plates will appear black on the bright aluminium.
白天,铝板上的孔和明亮的铝相比是黑色的,在晚上.
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