Even at the South Pole the radiation received from the sun at Midsummer's day equals the heat from a network of one-kilowatt electric fires, spaced five feet apart.
甚至在南极，夏至那天从太阳吸收的辐射热，也与互相间隔五英尺的一千瓦电炉组成的电炉网所放出的热量相等。
Even at the South Pole the radiation received from the sun at Midsummer's day equals the heat from a network of one-kilowatt electric fires, spaced five feet apart.
甚至在南极，夏至那天从太阳吸收的辐射热，也与互相间隔五英尺的一千瓦电炉组成的电炉网所放出的热量相等。
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