Edison and his men were watching his light all the night. The light continued to burn for40 hours before it went out.
爱迪生和他的同伴整晚上在观察他的灯，灯连续亮了40个小时才熄灭。
Edison and his men were watching his light all the night. The light continued to burn for40 hours before it went out.
爱迪生和他的同伴整晚上在观察他的灯，灯连续亮了40个小时才熄灭。
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