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.
With the capture hooks in place, the automation script handles the actual download process. The approach has been refined significantly across the three versions, but the core idea has remained fairly constant: trick the browser into buffering the entire audio track as fast as the hardware and network allow, rather than in real time.
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在龙先生看来，这三道防骗技术“防火墙”，可杜绝骗子诱导植入或下载木马病毒，可拦截诈骗分子的陌生号码，还能拦截陌生短信。
德索托的理论并非纸上谈兵。他曾亲自参与秘鲁的改革，而且一度取得显著效果。