They type in the license plate number of returning cars, and their portable, which has a built-in printer, calls the main computer, gets the rental information, and prints out the bill on the spot.
机场工作人员输入运送汽车的拍照号码，随后，带有内置打印机的移动计算机会呼叫主机，获取汽车的租赁信息，然后当场打印出帐单。
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