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求打英文出来…追分 

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求打英文出来…追分
 
求打英文出来…追分 
How do you measure the value of a candle?You can't measure its value by light output,since the candle has lost its function as a means of lighting a room. 再答: The years that followed Thomas Alva Edison's invention of the lamp might have been called "the fall of the candle and the rise of the light bulb."
再答: Yet every night all over America millions of candles are burning. No romantic dinner is complete without candles on the table. Individual candles are sold for $20 or $30 each, much more than a light bulb.
再答: Unlike an electric bulb, the value of a candle has no relationship to its light output. Like the fireplace and the sailing ship, the candle has lost its function and turned into art.
再答: 望采纳