Traditionally, they have been self-sufficient in dairy but it is looking like their consumption is going to grow faster than they can produce it.

过去他们的奶制品是自给自足的，但他们的消费速度看来即将要超过产能扩张的速度。

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The daily living consumption of peasants' family, mainly go on through the self-sufficient way under the traditional economic condition.

农户家庭日常生活消费，在传统经济条件下主要依赖自给自足的方式进行。

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This refers to the "greening up" of everyday products so that they are as near to self-sufficient in terms of energy consumption as is possible.

BBC: NEWS | Science/Nature | Switching on to nanogeneration