BEIJING — This city’s network of arterials, five ring roads that are fed by nine more freeways, is barely two decades old, but it is already sclerotic.

环绕北京的五条内环路，修建时间最长的，也不过只有二十年的时间。 但因为这五条内环路又通向各自连接的共九条高速公路。

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The calculation results prove that the model for load optimal regulative characteristic of doubly fed hydrogenerator based on improved BP neural network algorithm is effective.

计算结果证明了基于改进BP神经网络算法建立的双馈水轮发电机负荷优化调节特性模型的有效性。

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Transformers convert voltage to 220, then from 110 to 10 kV and only in such form electricity is fed into the town network.

变压器把电压转化为220千伏，然后从110千伏转化为10千伏。只有以这种方式，电力才能被配送到城市电力网。

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Located 55km north of Graaff-Reinet along a gravel road through the Sneeuberg (Snow Mountains), the remote village of Nieu Bethesda has a spring-fed network of irrigation channels, giving it the appearance of a green oasis.

BBC: South Africa��s arty eastern Karoo

In 2010 a Malaysian man pleaded guilty to adding "malicious code" to the Fed's network via one of its regional banks.

BBC: Federal Reserve

The train-operating companies are increasingly fed up with the dire state of the network and would welcome fundamental reform.

ECONOMIST: Railtrack