Minh Phuong Ⓜ️🎩
@minhphuong30
gm (good math!) https://www.brunogavranovic.com/posts/2022-02-10-optics-vs-lenses-operationally.html
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Văn Toàn
@vantoan10
What's up? Mất kiên nhẫn quá!
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