其次，如果存在大量接收方节点，在所有节点都反映出改变之前，可能会存在滞后。
Secondly, if there are a large number of receiving nodes, there could be a lag before all nodes have the changes reflected.
从历史上看，电影总是表现得滞后一些，而且很少反映当下发生的事件，因为环境、兴趣点和国民情绪通常在电影制作过程中的几年内已经发生改变。
Historically, movies have been developed slowly, and seldom tackled current events, as circumstances, interest and the national mood would often change in the years it took get a picture on track.
他们说这些费用反映了实际的成本，如果不能收取，服务将会滞后，申请人等待的时间就会加长。
They say unless those fees reflect actual costs, services would have to be cut back and waiting times for applicants would increase.
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