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扶手电梯左行右立已经偷偷取消很长时间了，有人知道么？
source link: https://www.v2ex.com/t/468629
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分享发现 - @dddd1919 - 具体原因网上有，现在虽然没有标语了，但大家习惯养成，有时候站在左边心里还有点虚，自觉靠右。。。。。。
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