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- 321 Shindou
- 20 20 20 Rule | RestEyes
- macOS 앱: 건강 및 피트니스 게시자: Rohan Sachdeva
- $2.95
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- 포인트: 1 + 0 버전: 3.3 What is the 20-20-20 Rule? The 20-20-20 Rule states that when staring at a screen for long periods, it is beneficial to look away from your screen every 20 minutes at something 20 feet ⥯
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