Livestock contribute directly to livelihoods worldwide, providing not only food, but also non-food products, draught power and financial security.

畜牧业不仅为全球提供食品，还提供非食用产品、畜力和金融安全，直接有助于提高民生。

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Lastly, I will emphasize the realize method of characteristic training, intelligent of training simulation, and draught policy of intelligence power marketing training.

最后，着重介绍了个性化培训的实现方法、培训仿真智能化的实现方法、电力营销智能培训牵引策略。

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The advantages of frequency speed control in forced draught fan for boiler in power plant are set forth by examples.

结合实例阐明了电站锅炉送风机采用变频调速的优点。

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