Texas Parks and Wildlife officials teamed up with NASA to set up these acoustic recording devices to monitor the sounds of animals in the wild.

得克萨斯州公园和野生动物管理局的工作人员与美国国家航空航天局（NASA）合作，安装了这些声学录音设备，以监测野生动物的声音。

Security measures on merchant vessels are usually predicated on discouraging the crews of attacking boats with non-lethal measures like long-range acoustic devices, floodlights and water cannons, together with barbed wire to repel boarders.

商船的安全措施通常基于阻止船员使用远程声学设备、泛光灯和高压水枪等非致命措施攻击船只，以及用铁丝网击退寄宿生。