For a brief, shining moment, San Francisco was clean. The arrival of world leaders for a high-profile summit earlier this month prompted the city to jump into action, hosing down its streets and sprucing up neglected downtown neighbourhoods. The change was dramatic. It was also shortlived.
旧金山短暂地闪亮、干净了一段时间。上月早些时候，世界各国领导人抵达旧金山，参加一场备受瞩目的峰会。他们的到来促使这座城市紧急行动起来，冲洗街道，把受到忽视的市中心清理干净。变化是巨大的。但好景不长。
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