In order to dial correctly your computer might require additional information such as a calling-card number or the area code of your current location.

您的计算机可能需有其他信息才能正确拨号，例如电话卡号码或者您当前位置的地区号码。

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The other half worked on the back end, crunching computer code to build systems for order-processing, distribution and inventory flow and to integrate a new Web site tracking system with the existing ones.

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