The Aion game servers are currently down for unscheduled maintenance.
永恒之塔服务器因紧急维护而暂时关闭！
The average U.S. coal plant is offline 12.5 percent of the year for scheduled and unscheduled maintenance.
美国的煤电厂平均一年有12.5%的时间用来做定期或不定期的维护。
The average U.S. coal plant is offline 12.5 percent of the year for scheduled and unscheduled maintenance.
美国的煤电厂平均一年有12.5%的时间用来做定期或不定期的维护。
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