他是吸尘器的发明者。
He was the ___inventor of the vacuum cleaner.
作为一名发明家，她创造了许多有用的设备。
As an ___inventor, she created many useful devices.
许多人认为是托马斯·爱迪生发明了第一个实用的电灯泡。
Many credit Thomas Edison as the ___inventor of the first practical light bulb.
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