求翻译：当人们点亮电灯时，每每会想到这位伟大的发明家，是他，给黑暗带来无穷无尽的光明。1979年，美国花费了几百万美元，举行长达一年之久的纪念活动，来纪念爱迪生发明电灯是什么意思？

When people light lamps, we often think of the great inventor, he, to bring endless darkness bright. In 1979, the United States has spent millions of dollars, at year-long celebration to commemorate Thomas Edison invented the electric light

When people lighted lamp, we often think of the memory of a great inventor, he was brought in to the darkness of endless light. In 1979, the United States has spent $1 million, and held several year-long observance to commemorate the Edison invented electric

When the people lighten the electric lamp, often can think this great inventor, is he, for brings the inexhaustible light dark.In 1979, US has spent several million US dollars, lifts president to reach for a year long time the commemorative activity, commemorates Edison to invent the electric lamp

When people light up when the lights, will always think of the great inventor, is his, brings infinite light to dark. 1979 century and United States spend millions of $-long years of celebration to honor Thomas Edison Electric light

When the people lighten the electric lamp, often can think this great inventor, is he, for brings the inexhaustible light dark.In 1979, US has spent several million US dollars, lifts president to reach for a year long time the commemorative activity, commemorates Edison to invent the electric lamp