open air competitionopen-air competition
... 露天游乐场: outdoor area where funfairs are heldd 露天比赛: open air competitionopen-air competition 露天煤矿: open cast coalopen-cast coalstrip coal minesurface coal mine ...
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open air competitionopen-air competition
露天比赛，露天比赛
以上为机器翻译结果，长、整句建议使用 人工翻译 。