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khiemhyhy167
2 năm trước
Một bạn chỉ có thể nhìn rõ trong khoảng 40cm trở lại. a) mắt người này bị tật j b) kính này có tiêu cự là bằng bao nhiêu? Mong các bác trả lời em vote 5 sao
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