汤玛斯爱迪生创造了许许多多的发明物，但留声机却是他的最爱。当爱迪生正在努力设法改善电报机及电话机时，却发现可以利用锡箔包裹的滚筒来记录声音。1877年时，他创造了一个内附两只唱针的机器：一只用来记录，而另一只用来播放。当爱迪生对着送话口说话时，唱针会将他的声音震动刻划在滚筒上，使其形成波纹。猜猜看，爱迪生对留声机说的第一句话是什么？


Thomas Edison created many inventions, but his favorite was the phonograph. While working on improvements to the telegraph and the telephone, Edison figured out a way to record sound on tinfoil-coated cylinders. In 1877, he created a machine with two needles: one for recording and one for playback. When Edison spoke into the mouthpiece, the sound vibrations of his voice would be indented onto the cylinder by the recording needle. What do you think were the first words that Edison spoke into the phonograph?

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