SK Telecom Co. said subscribers can pay 3, 000 won (US.50) to download a sound wave that is inaudible to human ears but annoys mosquitoes within a range of three feet.

韩国鲜京电讯公司表示，定制此项服务的用户只需花3000韩元(合2.50美元)便可下载一种声波。 这种声波可以在三英尺的范围内驱赶蚊虫，而人耳却听不见。

youdao

SK Telecom said subscribers can pay 3,000 won (US.50) to download a sound wave that is inaudible to human ears but annoys mosquitoes within a range of three feet.

韩国鲜京电信(SK)表示定制用户可以花费3000韩元(合2.54美元)下载一种声波，这种声波人耳察觉不到，但可以在3英尺范围内驱赶蚊虫。

youdao

However, Zheng Zhihua's voice is inaudible; it's like the sound of silence.

而郑智化的歌声是听不见的，是类似于沉默的一种声音。

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Rather than "pair" traditionally over WiFi or Bluetooth, the app fires up the microphone and listens for unique inaudible tones that play underneath the sound effects.

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