摘要
<正>德国的许多游泳池没有足够的训练有素的救生员,因此,许多游泳馆不得不关闭。针对这一问题,研究人员在水上救援服务的帮助下,开发了一款水下自主航行器,它可以用来拯救溺水者。主题语境:人与社会篇幅:356词建议用时:6分钟1Because of a lack of trained lifeguards to watch over swimming pools, a team of scientists from Germany has developed an underwater robot, intending to assist lifeguards in rescuing swimmers in emergencies.