如果我们保留最大超时长度为4秒，那么程序运行到这个时间时就会结束，并打印当前输入的敲打序列。
If you leave the maximum timeout length at four, the program will end and print your currently entered knock sequence.
在多切面的水晶表蒙下，努卡的“ZenH”显示器将当前时间的时、分、秒分割成12个时段来显示。
Under the faceted crystal lens, Nooka’s ZenH display presents the current time in hours, minutes and seconds split into 12-hour intervals.
我们使用sleep命令将显示推迟两秒，然后使用date命令打印当前的日期和时间。
We use the sleep command to cause a delay for two seconds, and use the date command to print the current date and time.
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