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Nguyễn Tùng Chi
Giới thiệu về bản thân
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0
2023-01-17 15:40:45
Hiện tượng xảy ra : Túi ni lông xẹp xuống
Khi để tay lên lỗ thủng, ta có cảm nhận rằng : Có một luồng không khí từ trong túi xì ra như gió nhẹ.