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// 步骤1：计算每辆车的到达时间（精确浮点数，禁止取整）
，详情可参考91视频
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Despite the headline, this isn't really a story about superconductivity—at least not the superconductivity that people care about, the stuff that doesn't require exotic refrigeration to work. Instead, it's a story about how superconductivity can be used as a test of some of the weirder consequences of quantum mechanics, one that involves non-existent particles of light that still act as if they exist.
A good power bank is essential. Between my phone, headphones, tablet, and smartwatch, I feel like I always have one device or another begging me to plug it in. I actually carry around a power bank with me everywhere due to my chaotic, spontaneous lifestyle and refusal to charge my devices when they aren't actively dying. I purchased my favorite from our extensive list of the Best Power Banks, which features hand-tested picks from my fellow WIRED Reviews gadget experts. Several of their (and my) top picks are on sale right now.