匯智英語自學(xué)課堂突破口語中級(jí)篇突破口語D lesson43
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在美國，供熱和空調(diào)系統(tǒng)都是由中央（冷暖）系統(tǒng)來完成。居于樓房地下室的一個(gè)供熱裝置通過燃燒氣體釋放熱量來給水和空氣加熱，加熱的水或空氣則靠壓力運(yùn)送到樓房或大樓來提高它的溫度。室外的一個(gè)空調(diào)裝置則使用電力將空氣的溫度下降，下降的空氣通過房間的通道送往整棟大樓。通過燃燒氣體加熱和電力降溫使空氣調(diào)整至合適的溫度，這當(dāng)然是要付費(fèi)的。
Heating and air conditioning in the states is usually done by what it called central heating and air-conditioning. A heating unit in the basement of a house burns gas to heat air or water, which is then forced through the house or building to raise its temperature. An air-conditioning unit outside the house or building runs uses electricity to cool the air and then sends into the building through openings in the rooms of the buildings. People have to pay, of course, for the electricity they use and the gas they burn to keep their homes at just the right temperature.
