An active timer is one which is still producing timer events.
活动计时器是仍然在产生计时器事件的计时器。
The AllowOverwrite flag indicates whether or not it is permissible to change the settings of a timer while that timer is still active.
AllowOverwrite标志指示是否允许在计时器仍然处于活动状态时更改计时器设置。
If however, the control message is send AFTER fifty seconds, and the timer is no longer active, it will be processed.
不过，如果控制消息在五十秒后发送，由于该计时器不再处于活动状态，因此会处理此消息。
This means that its likely there will be many timers active at once, and for this reason each timer must have a unique Identifier.
这意味着，很可能出现同时有多个计时器处于活动状态的情况，正是由于这个原因，因此每个计时器都必须具有唯一标识符。
This means that its likely there will be many timers active at once, and for this reason each timer must have a unique Identifier.
这意味着，很可能出现同时有多个计时器处于活动状态的情况，正是由于这个原因，因此每个计时器都必须具有唯一标识符。
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