noun 下载 🔗分享 声呐,回声定位 Echolocation Examples : "The bat used its sonar to find its way through the dark cave. " 蝙蝠用它的声呐(回声定位)在黑暗的洞穴里辨别方向。 technology nautical sound communication electronics signal machine device ocean military 与AI对话词汇游戏阅读练习
noun 下载 🔗分享 声呐, 水声定位仪 A device that uses hydrophones (in the same manner as radar) to locate objects underwater. Examples : "The fishing boat used sonar to find schools of fish beneath the surface. " 渔船使用声呐(水声定位仪)来寻找水面下的鱼群。 technology electronics device nautical ocean military science sound machine signal 与AI对话词汇游戏阅读练习