有一位非常忙碌的发明家叫托马斯·爱迪生，他带领自己的工作队发明了电灯泡、留声机和电影摄影机。
One very busy inventor was Thomas Edison. With his team of workers, he invented an electric light bulb, the phonograph and movie cameras.
有一位非常忙碌的发明家叫托马斯·爱迪生，他带领自己的工作队发明了电灯泡、留声机和电影摄影机。
One very busy inventor was Thomas Edison. With his team of workers, he invented an electric light bulb, the phonograph and movie cameras.
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