These volcanoes are so explosive that they burst open in a single big crack, leaving behind a vast hole, the caldera.

这些火山具有极强的爆发性，以至于在它们从一条大的裂缝中喷涌而出，留下了一个巨大的洞，也就是火山口。

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For the last 20 years—from the end of the cold war through two burst bubbles in a single decade—the US has been casting about for its next economic narrative.

从冷战结束到十年中两次经济泡沫破裂的过去20年里，美国一直在寻找下一个经济叙事。

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For the last 20 years from the end of the cold war through two burst bubbles in a single decade the US has been casting about for its next economic narrative.

从冷战结束到十年中两次泡沫破裂的过去20年里，美国一直在寻找下一个经济叙事。

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Unlike stimulation for treatment of Parkinson's or other issues, in which the brain is stimulated continuously or repeatedly with an implanted pacemaker-like device, memory in the latest study was improved by a single burst of current when administered in the right location as memories were being formed, according to Dr. Fried.

WSJ: Memory Gets Jolt in Brain Research

In photo mode you'll get single shot, burst and time-lapse modes with a top resolution of 4, 096 x 2, 048.

ENGADGET

That, she says, suggests the burst came from a single neutron star just a few hundred light years away.

ECONOMIST: Astronomy