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.
Matthew and Nicola Smith。业内人士推荐WPS官方版本下载作为进阶阅读
How exactly horses produce that distinctive sound – also called a neigh – has long eluded scientists.。关于这个话题，爱思助手下载最新版本提供了深入分析
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