It is caused by the property change of feed stock in storage process and alkadiene polymerization.

造成这一问题的主要原因，是原料油性质在存储过程中发生变化、二烯烃发生聚合。

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Furthermore, in the effort to feed the hosts of people on this planet, the focus on factory and intensive farming methods is being cited as a key factor in climate change.

此外，为了养活地球上的大量人口，人们对工厂化和集约化的耕作方法的集中被认为是气候变化的关键因素。

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These sources of positive news feed their motivation at the time, but this motivation does not always last long enough to bring lasting change to their lives.

这些积极信息源的确可以在某些时候给予我们前进的动力，但这种动力难以持续存在并改变我们的生活。

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But you can change those tags and the feed of replacement images anyway you want.

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The nature of the cuts became clear this week with an announcement from the Greek Ministry of Environment, Energy and Climate Change (YPEKA) that feed-in tariff rates would be reduced by 40 percent for those projects installed after February 1, 2013 and before January 31st, 2014.

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Google is criticized because services like Google News provide the sorts of stories that in another era you needed to feed change into a newspaper vending machine to get.

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