歌曲《时间都去哪儿了》以舒缓的旋律、朴实的歌词,引起了许多人的共鸣。人们在为之感动的同时,也意识到时间真的在不经意间就溜走了。古人怎么计时?现代人如何定义“秒”?从描写时间的诗词中,人们能读出什么?科学家的时间都去哪儿了?本期,我们来回答这些问题。 The song “where the time goes” with a soothing melody, simple lyrics, aroused many people’s sympathy. As people moved, they also realized that time really slipped out inadvertently. How does the ancients clock? How does the modern definition of “second”? What can one read from the poetry that describes the time? Where are the scientists’ time? In this issue, we answer these questions.