Caesium clock
铯钟
🧩 词语组成解析
[医] 铯(55号元素)
clock
[klɑk]
n. 钟，时钟;计时器;秒表;仪表;
vt. 记录（时间或速度）;测…的速度;
vi. 打卡;记下时间;
🗣️ 情景例句
Besides Chinese New Year, what are the other festivals according to the Lunar Calendar?
农历新年以外还有什么节日？
Would you take this coat to the cleaner's?
你可以把这件外套送到洗衣店吗？
that people have for years assumed that the process of losing vigour with time,
多年来就已认识到。生命力随着时间流失而丧失活力，