翻譯作業2-4-3-3

Because the first law of thermodynamics states that energy cannot be created or destroyed, only converted from one form to another, you may be tempted to think there will always be enough energy. Yet if you fill a car's tank with gasoline and drive around or use a flashlight battery until it is dead, something has been lost. But what is it? The answer is energy quality, the amount of energy available that can perform useful work.

由於熱力學第一定律指出，能源無法產生或消失，只有從一種形式轉換到另一種形式，你可能會覺得總是會有足夠的能量。然而，如果您填滿汽車油箱的油和駕駛或使用手電筒電池，直到它已經用完，有些已遺失。但它是什麼？答案是能源質量，能源使用量，可以進行有益的工作。


Countless experiments have shown that whenever energy changes from one form to another, we always end up with less usable energy than we started with. These results have been summarized in the second law of thermodynamics: When energy changes from one form to another, we always end up with lower quality or less usable energy than we started with. This lower quality energy usually takes the form of heat given off at a low temperature to the environment. There it is dispersed by the random motion of air or water molecules and becomes even less useful as a resource.

無數的實驗顯示，每當能源形式的變化從一個到另一個，我們總是以使用較少的能量比我們開始的。這些成果是總結了熱力學第二定律：當能源形式的變化從一個到另一個，我們總是與低質量或更少使用能源比我們開始的。這種低質量的能源通常採取的形式發出的熱量，在低溫環境。因此它是分散的，由隨機運動的空氣或水分子，並成為更有益的資源。