形容词
中文翻译：Unknown
同义词：
['autothermic', 'autothermal', 'self-heating']
例句：
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1. The engine is exothermic, meaning it produces heat internally.
发动机是放热的，意味着它内部产生热量。
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2. The chemical reaction is exothermic, which means it releases energy in the form of heat.
化学反应是放热的，这意味着它以热量的形式释放能量。
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3. The hot spring is exothermic, indicating that it generates its own heat.
温泉是放热的，表明它自己产生热量。