However, Tolley points out that humans don't move the way fans spin, at all. "We want to be able to lift things, and push things, and do things that require a lot of force and torque."
// 步骤1：计算每辆车的到达时间（精确浮点数，禁止取整）
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While the potential for physical hazards in Antarctica is high, Precious says social dynamics can prove more problematic. When relationships break down, the fallout can be hard to rectify, and hard to control, he says.
At least 15 killed after military plane carrying banknotes crashes in Bolivia
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