Therefore, research on the arena of the China's large-scale track and field event is an extremely necessary work to do.
为此,对我国大型田径赛事赛场风险进行相关的研究是一项极其必要的工作。
Therefore, research on the arena of the China's large-scale track and field event is an extremely necessary work to do.
为此,对我国大型田径赛事赛场风险进行相关的研究是一项极其必要的工作。
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