“对于第一个实验对象，经过大约20小时的训练，他的数字跨度从7上升到20。”爱立信回忆道。
"With the first subject, after about 20 hours of training, his digit span had risen from 7 to 20," Ericsson recalls.
此外，新的数字技术已使得股票交易更迅速、信息使用更快捷，且因此使得金融市场中注意力的时间跨度更短暂。
In addition, new digital technologies have allowed more rapid trading of equities, quicker use of information, and thus shorter attention spans in financial markets.
当前有关数字记录状态的规则是：数据的存储期决不能超过其必要时间跨度，因为这样数据可能会被误用或者由于不注意而泄漏。
Current rules on digital records state that data should never be stored for longer than necessary because they might be misused or inadvertently released.
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