The term "procession" used in this Law means an activity in which people line up for a march along a public road or across a public place in the open air to express their common aspirations.
本法所称游行，是指在公共道路、露天公共场所列队行进、表达共同意愿的活动。
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A pre-procession method to extract the vehicle feature was presented in this paper, which combined the detection line and virtual loops.