美联社新闻一分钟 AP 2013-12-22

This pump has been changed out before. This is the starboard side. Back in August of 2010, we did a pump rr for a different failure. That was actually a failure of the pump. This is a valve inside the pump module itself. And so, this particular pump

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In polar regions where the magnetic field is / weakest, auroras glow in the sky. These dazzling displays of colored lights form when solar particles slam into gases in our atmosphere causing them to glow. The stronger the solar wind, the more dramati

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Blockson's computer model reveals that at the South Atlantic Anomaly, the magnetic field isn't just weaker than anywhere else on the planet. It's actually reversed polarity. There is a patch on the core in the South Atlantic where things are not poin

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Pakistan, India swap nuclear sites lists

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Japan nuclear fears spread to China

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Modern Geiger counters don't click. As is the case with so many other devices, they have gone digital. At least that is true for the high-tech Japanese Geiger counters here. But they still measure radiation（放射） exposure in the quaint-sounding

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[00:27.68]checkmate 将军! [00:32.28]again?! 又来?! [00:32.64]Obviously,you're not well suited for three-dimensional chess. 很显然 你不适合玩三维国际象棋 [00:36.84]Perhaps three-dimensional candy land would be more your speed. 你的水