n.倒数读秒，倒计时(如发射宇宙飞船时)，大事临近的时期

原形：countdown复数：countdowns

We will countdown to New Year's day together
我们会一起倒数新年。
He will never employ any device with a digital countdown.
他将不会使用任何倒数计时用具。
The countdown to the New Year's Eve fireworks has begun, with just minutes left until midnight.
除夕夜烟花倒计时已经开始，距离午夜只剩下几分钟了。
NASA initiated the countdown for the rocket launch, signaling an exciting start to the space mission.
美国宇航局启动了火箭发射的倒计时，标志着太空任务激动人心的开始。
The teacher started a countdown from 5, giving students a final chance to finish their test.
老师从5开始倒数，给学生们最后完成测试的机会。
With the countdown reaching zero, the athletes burst off the starting line in the 100-meter sprint.
随着倒计时到达零，运动员们在百米短跑中猛地冲出起跑线。
The TV show host announced a countdown before revealing the winner of the talent competition.
电视节目主持人在揭晓才艺比赛冠军前宣布了倒计时。
The website launched a countdown timer for the release of their highly anticipated new product.
该网站为即将发布的一款备受期待的新产品启动了倒计时计时器。
In the last seconds of the countdown, the crowd cheered eagerly, awaiting the grand opening of the theme park.
在倒计时的最后几秒，人群热切地欢呼着，等待主题公园的盛大开幕。
The astronaut went through the pre-launch checklist as the countdown progressed smoothly in the background.
随着倒计时在后台顺利进行，宇航员逐一检查发射前的清单。
The app features a countdown to help users track and prepare for important events or deadlines.
这款应用程序具有倒计时功能，帮助用户追踪并为重要事件或截止日期做准备。
As the countdown ended, the concert stage lit up with dazzling lights and the band appeared, electrifying the audience.
倒计时结束后，音乐会舞台亮起了耀眼的灯光，乐队出现，让观众兴奋不已。