1000秒倒计时（带背景音乐）

[视频作者] 遇见数据

[视频时长] 16:46

[视频类型] 科学科普

1000秒倒计时（带背景音乐） 背景音乐： The following music was used for this media project: Music: Wish Background by Kevin MacLeod Free download: https://filmmusic.io/song/4633-wish-background License (CC BY 4.0): https://filmmusic.io/standard-license Artist website: htt