閏秒:地球自轉小捕手 One Extra Second of Summer JUN.14,2021/Lauren McCarthy
你或許對閏年耳熟能詳,但你有聽過閏秒嗎?那準備好囉,因為今年六月底會多一秒。 You're probably familiar with leap years, but have you ever heard of a leap second? Well, get ready, because this June, there will be an extra second added to the end of the month. - a leap year 閏年
- a leap second 閏秒
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