Walk through an apartment block in the US and chances are you will find a series of small yellowing notices stuck on the front door or dotted around the mail room – tell tale signs that UPS or Fedex delivery men have been and gone, having failed to deliver long-awaited packages.
走在美国的公寓大楼里，你可能会在住户大门上或大楼收发室附近发现许多泛黄的小条。这些小条说明一件事：美国联合包裹服务公司(UPS)或联邦快递(FedEx)的快递员来过，但取件人等候已久的包裹却未投递成功。
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