Wood, the primary source of heat for homes and industries and also used in the iron industry as processed charcoal, was diminishing in supply.

木材是家庭和工业的主要热源，也以加工木炭的形式用于铁工业，它的正在减少。

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He knew he had found Lord Kelvin's unknown source of heat.

他知道他发现了开尔文勋爵所说的来源不明的热量。

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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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Safety features are designed to keep any source of heat or electricity from igniting this explosive brew.

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Indeed, ultrasound is being used not only for imaging, but also as a source of heat itself.

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The Olympic flame burning in a corner of the stadium seemed to be the only source of heat.

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