Specifies the time at which the message was posted.
消息被传递时的时间。
Specifies the time at which the source generated the event.
指定源生成事件的时间。
Duration: Specifies the length of time for which a lock is held.
持续时间：指定了锁被持有的时间长度。
Zooming-in further also specifies the value at that particular instant of time.
进一步放大就可以看到特定时刻的值。
Zooming-in further also specifies the value at that particular instant of time.
进一步放大就可以看到特定时刻的值。
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