Thuỷ Trần 🎭
@thuthuy
gm (good math!) https://www.brunogavranovic.com/posts/2022-02-10-optics-vs-lenses-operationally.html https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcSqqucrYh_8gfYkhwBPuKQ1y0dscZmcWRJUWw&s
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Khắc Huỳnh
@khachuynh
Voila! 😝🤣 Hôm nay thế nào? Bận rộn không? @thuthuy
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