He said that if China's AIDS prevention and treatment of a number of successful, it is in the blood safety is a large-scale blood transfusion and infected with the AIDS situation under control.

他说，如果说中国的艾滋病防治工作有一些成功的方面，那就是在血液安全方面，就是大规模的采血和输血感染艾滋病的情况得到了控制。

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In order to control the pest, producers will have a variety of large-scale use of pesticides, especially the irrational use of chemical pesticides, greatly reducing the safety of vegetable products.

为控制病虫害，生产者将不得不大量使用各种农药，特别是化学农药的不合理使用，降低了蔬菜产品的安全性。

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Utility-scale engineers long ago figured out this presents unprecedented operational, safety and control hurdles.

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