第二个操作记录库存水平的变化，此变化是由于商品售出或新进货物引起的：这称为库存动向。
The second operation records a change in inventory levels, either because an item had been sold or new stock has arrived: this is called a stock movement.
例如，您可能使用Polling活动在系统中搜索新的销售订单记录，然后自动向会计应用程序发送数据副本以生成帐单。
For example, you might use a Polling activity to search for new sales order records in your system and then automatically send a copy of the data to your accounting application to generate a bill.
控制中心的工作人员将会联系车主确认车是否真的被盗，然后通过汽车GPS部件记录的车辆动向通知警察。
Staff at the centre will then contact the owner to confirm that the car really is missing, and keep police informed of the vehicle's movements via the car's GPS unit.
控制中心的工作人员将会联系车主确认车是否真的被盗，然后通过汽车GPS部件记录的车辆动向通知警察。
Staff at the centre will then contact the owner to confirm that the car really is missing, and keep police informed of the vehicle's movements via the car's GPS unit.
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