In the past some people thought that heat was a fluid, because it can flow from a hot body to a cooler one until both are at the same temperature.是什么意思_In the past some people thought that heat was a fluid, because it can flow from a hot body to a cooler one until both are at the same temperature.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句