Văn Sửu
@vansuu
gm (good math!) https://www.brunogavranovic.com/posts/2022-02-10-optics-vs-lenses-operationally.html
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Kyomi
@kyomi
tôi cũng có suy nghĩ tương tự! Thương quá! 🤗🤤😅 @vansuu
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