When shoes slide across a floor, wave-like deformations of the sole can generate squeaking. The pitch of the squeak depends on the rate at which deformations are generated.
16:48, 27 февраля 2026Россия
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Израиль нанес удар по Ирану09:28
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China urges citizens in Iran to evacuate
15:59, 2 марта 2026Экономика。搜狗输入法2026对此有专业解读