noun🔗Share水中聴音器A transducer that converts underwater sound waves into electrical signals, rather like a microphone"Scientists use hydrophones to listen to whales in the ocean. "科学者は海でクジラの声を聞くために水中聴音器を使います。technologynauticalsoundelectronicsdeviceoceansignalmachinecommunicationtechnicalChat with AIVocabulary GamePractice Reading