（考古学家）在一个泥泞的洞里偶然发现了一艘大约3000年前制造的保存完好的船只，其对考古学研究产生了深远的影响。

A beautifully preserved boat, made around 3,000 years ago and discovered by chance in a muddy hole, has had a profound impact on archaeological research.

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雄鹿摩擦都有一种由雄鹿前额上的腺体产生的气味，这种气味在制造擦痕时就涂抹到了树上。

Buck rubs also have a scent produced by glands in the foreheads of deer that is transferred to the tree when the rub is made.

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作者说带有“不含”字样的标签会对食品制造商产生什么影响？

What does the author say absence claims labels will do to food manufacturers?

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It's biological engines, right. Things that either produce or consume biological fuel to do different sorts of processes. Also, of course of key importance to understand what the, in that case, biological thermodynamics are.

但不只是我们制造的引擎,生物引擎也是如此,它们产生或消费生物燃料,来完成不同的过程，当然，这也是理解生物热力学的关键所在。

麻省理工公开课 - 热力学与动力学课程节选