And some go for pure chemistry, breaking the cellulose down into a gaseous mixture of hydrogen and carbon monoxide before building it back up into something more useful.

也有的是纯粹的化学，将纤维素分解成一种氢和碳的气体混合物，然后再将其合成更为有用的东西。

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They're also more sensitive to heat than refined oils. They start breaking down, developing unpleasant flavors and giving off smoke at lower temperatures.

它们对加热温度也比精制油更敏感，载较低的加热温度下，它们就开始分解，并产生不好的味道，还会冒烟。

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And once we start breaking down those language barriers and sharing ideas with more people, that may be a real step toward a truly World Wide Web.

而且一旦我们消除了语言的障碍并与更多的人分享信息，我们将向真正的万维网迈出重要的一步。

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The policy was intent on breaking down the bigger schools and creating more manageable schools and almost starting from scratch, educationally, academically and logistically.

NPR: Big Urban Schools Grapple with Multiple Problems

It sounds Utopian, but it is nothing more than the breaking down of social barriers created by sheets of metal and glass and four wheels.

BBC: VIEWPOINT

Technological advances such as 'Snickometer' and 'hot spot', which are much more effective at breaking down caught behind decisions, are not in use for the series because host broadcaster SABC deemed the tools too expensive.

BBC: ECB's Giles Clarke says referral system is 'a shambles'