《how it's made》s21e13-silk,youtube 博主 insider 的《why silk
youtube: tidal locking | why do we only see one side of the moon
08 afp 2021 / bruce weaver前泽在youtube上宣布,他开始招募8个
去年 5 月苹果就通过 youtube 先后发布了 8 支主题为「why switch」
把巨大行星塞进地球和月球之间,看了有心理阴影!_youtube
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