日本一家公司推出了一种专供喜爱唱歌者练唱的袖珍机器，其外形像一台小型放音机。练唱者戴上耳机，把音乐卡插入机内即可练唱。随着音乐声，机上的液晶显示屏会同步显示出歌词，演唱者的唱歌声与器乐声混合后，同时从耳机中播出，这样就有助于练唱者快速掌握演唱要领。这... A Japanese company introduced a pocket-sized machine designed for practicing singing and singing like a mini-player. Practice singer put on headphones, the music card into the machine can practice singing. With the sound of music, the LCD screen on the machine will show the lyrics synchronously, and after the singer’s singing and instrumental music are mixed, the sound will be broadcast from the headphones at the same time. This will help the singer to master the singing skill quickly. This...