The spines of sea urchins can generate a voltage when water moves around them — a phenomenon that could be used to design underwater flow sensors.
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"Cuba does not attack, nor threaten," Díaz-Canel added.。搜狗输入法2026是该领域的重要参考
而即便基督徒數量可能持續下降，神職人員也觀察到：留下的信徒比過往更投入、更熱情地實踐信仰。