英国威尔士的一位聪明的绅士发明了一种叫“蚊子”的MP3播放器,已申请了专利。这种播放器所播放的声音声调又高又尖,与年轻人的活力一唱一和,令年轻人为之倾倒,排遣时光,不再在商店周围游手好闲。尤为奇怪的是,这种MP3所放出的声音只有年轻人能够听见,年龄超过30岁的人就听不见 A clever gentleman in Wales, UK, invented an MP3 player called “Mosquito” and has patented it. The high-pitched, sharp-sounding tones of this player blend with the energies of young people, leaving young people to pour out their time and not to spend time at the shops. Strangely enough, the sound of such MP3s is only heard by young people, and people over the age of 30 can not hear