分享回复赞 英语吧 卜经意爱上你 一篇快速阅读,求大神帮我做一下,或者找一下答案Turning the SwitchThe world currently has enough coal-fired power plants to produce about one terawatt of electricity—the equivalent to each of the seven billion people on Earth using two 75-watt light bulbs at the...
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