Another option demonstrated in Listing 6 is to define a countdown time that will run until the task is executed.

清单6中演示的另一个选项是定义一个倒计时时间，该时间将一直运行到执行任务为止。

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Unique green light fl ashes every second once the countdown time reaches 10 seconds.

到倒计时间达到10秒钟时，每个通道便会每秒钟闪烁绿灯。

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Green light fl ashes for each channel every second the countdown time reaches 10 seconds.

到倒计时间达到10秒钟时，每个通道便会每秒钟闪烁绿灯。

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Someone cursed, the rocket was refueled, and the countdown began a second time.

NPR: SpaceX Makes Progress with Rocket Test

WBGO's Josh Jackson hosts the countdown to 2009, central time (with help from WWNO).

NPR: Toast Of The Nation Swings Into 2009

Burma has ushered in the new year for the first time with a public countdown, in the latest sign of easing political controls on daily life.

BBC: Burma stages first public new year countdown