Global heating and environmental degradation are not technological problems.

全球变暖和环境退化不是技术问题。

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Other issues include scaling-down problems that occur with biochemical reactions, such as diffusion rates and heating.

其它还包括降低生化反应中出现的问题如速度和加热的弥散。

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These are created by cars and lorries, heating and heavy industry, and can potentially cause serious health problems.

这些颗粒物是由汽车，卡车，供热以及重工业产生的，且可能引发严重的健康问题。

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Hollyfast Primary School in Coventry was closed on Monday because of heating problems.

BBC: Heavy snow in Warwickshire causes M6 delays

Norfolk County Council said more than 60 schools had closed due to the cold weather, icy grounds, lack of transport and problems with heating.

BBC: Norfolk snow disrupts schools and transport

Castle ownership isn't for everyone, what with the heating costs, potential for plumbing problems and general conspicuousness of the structures.

FORBES: Castles For Sale