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.
Want more of the best of late night? Sign up for Mashable's Top Stories newsletters.
，更多细节参见safew官方版本下载
* @param arr 待排序数组，推荐阅读51吃瓜获取更多信息
В Финляндии предупредили об опасном шаге ЕС против России09:28。关于这个话题，heLLoword翻译官方下载提供了深入分析