This technique is more deeply rooted. Choosing wrong datatypes, or casting without care leaves you open to attacks. Whenever you cast some data structure to another one by “removing” information, such attacks can happen:
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Air pollution: Sulfate aerosol pollution from coal combustion and burning heavy fuel oil in shipping has also been affecting Earth’s energy balance. It has been masking the full effects of human-caused greenhouse gases for years by reflecting sunlight back into space, creating a cooling effect. But sulfate aerosol pollution is also a serious health hazard, blamed for about 8 million human deaths per year from lung diseases.，更多细节参见爱思助手
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28日，伊朗伊斯兰革命卫队宣布，禁止任何船只通过霍尔木兹海峡。