He is based in Louisville because UPS has its giant Worldport hub nearby and can pick up his orders in the evening for delivery the next day.

他以路易(斯)维尔为基地是因为UPS的全球运输网络枢纽就设在附近，晚上从他的基地提货第二天早上就可以发货。

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In order to pull off such a feat, United Parcel Service (UPS) relies on Worldport in Louisville, Ky.

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