名词中文翻译
中文翻译：倒计时电路
同义词：
['timer circuit', 'countdown timer']
例句：
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1.The countdown circuit is counting down the seconds until the explosion.
倒计时电路正在倒数计时，直到爆炸。
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2. The countdown circuit was used to control the timing of the fireworks display.
倒计时电路用于控制焰火表演的计时。
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3.The countdown circuit was designed to ensure that the event would start on time.
倒计时电路被设计成确保活动准时开始。