求翻译：第三部分是案件争议焦点。本案争议焦点主要是应当认定为何罪，即是以污染环境罪定罪处罚还是以投放危险物质罪定罪处罚。是什么意思？

The third part is the case a focus of controversy. The focus of controversy of the case should be identified as What's wrong, that is, the pollution of the environment convicted and punished or convicted and punished in the placing of dangerous material.

Part 3 of the cases is contentious. This dispute case should be identified as a major focus, and that is why crime convicted and punished for crimes or pollution of the environment in order to inject dangerous substances convicted and punished crimes.

The third part is the case disputes the focal point.This case disputed the focal point mainly is must recognize why the crime, is by pollutes the environment crime to determine guilt the punishment to put in the dangerous material crime to determine guilt the punishment.

Part three is disputed the focus of the case. Crime of dispute in the present case what the focus should be identified, that is to the conviction and punishment of the crime of environment pollution is to put on the conviction and punishment of the crime of dangerous substances.

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