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There is no one for whom the ongoing war in Europe does not pose a threat. This war defines more than just the place of Ukraine or entire Europe in the world. This is Russia’s war against any rules at all.
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There is no one for whom the ongoing war in Europe does not pose a threat. This war defines more than just the place of Ukraine or entire Europe in the world. This is Russia’s war against any rules at all.
But how long will the world let Russia be like this? This is the main…
时政
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twitter.com)
00:19:20
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On the night of 3 August 1944, retreating German soldiers blew up every bridge in Florence except one.
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On the night of 3 August 1944, retreating German soldiers blew up every bridge in Florence except one.
It had been standing since 1345...
The bridge is called the Ponte Vecchio, the Old Bridge. It is the oldest surviving crossing of the Arno River, on a site that has carried
时政
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twitter.com)
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How prairie dogs use the Bernoulli’s principle.
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How prairie dogs use the Bernoulli’s principle.
In order to ensure sufficient oxygen within their burrow, one of the entrances is built with a raised mound of dirt, while the other is not. This determines different wind velocities and different pressures + natural ventilation
有趣
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twitter.com)
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