countdown
英 ['kaʊntdaʊn]
美['kaʊntdaʊn]
- n. 倒数计秒
考试真题
- After the high-pressure Countdown round at this year's national MathCounts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math Video Challenge took the stage to show their videos.
出自-2017年6月阅读原文
- After the high-pressure Countdown round at this year's national Math Counts competition, in which the top 12 students went head to head solving complex problems in rapid fire, the finalists for the Math video Challenge took the stage to show their videos.
2017年6月六级真题（第三套）阅读 Section B