Anything that can burn is a source of heat energy.
任何能够燃烧的东西都是热能源.
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Isolate from any source of heat or ignition.
与热源和明火隔绝.
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The only source of heat in this old house was an archaic coal stove.
这栋旧房子内惟一的供热来源是个古老的煤炉.
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One kind of heat engine uses atomic energy as a source of heat.
有一种热机用原子能作为热源.
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