时间升级？
When Windows XP launched its simplified Chinese characters version back in November of 2001, an upgrade copy cost 1,500 RMB - which was about a month's wages for many office workers at the time.
2001年11月，Windows XP发布了简体中文版操作系统，其升级费用为1500元人民币- - -这差不多是当年许多在办公室工作的人一个月的薪水。
For instance, an I/O upgrade in a rack-mount server requires a card swap which takes more time and effort and also requires system down-time.
例如，机架型伺服器的I/O连接埠升级需要进行一项卡抽换，这样做既消耗时间、精力，也要求系统停机。
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