问题描述：
the fact that large numbers are gathered at a paticular time and place brings with it the pros
the fact that large numbers are gathered at a paticular time and place brings with it the prospect that such uncontrolled events will also be concentrated.翻译
the fact that large numbers are gathered at a paticular time and place brings with it the prospect that such uncontrolled events will also be concentrated.翻译
问题解答：
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